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*Additional Investigations*

Intersecting Chords: Find an equation to relate chords of a circle.

Edge, Face, Vertex: Find an equation that relates the number of edges to the number of faces and the number of vertices in three-dimensional objects.

Area of a Kite: Find an equation that relates the area of a kite to its diagonals.

Segments on a Secant: Find an equation that relates segments on a secant.

Twice Reflected over Intersecting Lines: Find an equation which relates the angles formed by intersecting lines and points reflected over these lines.

Twice Reflected over Parallel Lines: Find an equation that relates the distance between points reflected over parallel lines.

Varied Slopes and Intercepts: Discover what happens to the graph when you vary the values for m and b in the equation y = mx + b.

Unusual Property: Can ?

Burglar Alarm: Determine how much money a company should charge for a burglar alarm system.

Composite Functions: Determine the composite function of two distinct functions.

Catching Up in Savings: How many years will it take Sally to have as much money as Judy?

Swapping Coordinates: What happens when you switch the x and y coordinates of a function?

Solutions in a System: What is the largest number of solutions possible in a given system of equations?

Input Equals Output: Find two functions so that the input of one is always equal to the output of the other.

In Between: Find a number such that its square is between two given numbers.

Crossing Curves: Find where a given linear function crosses a given quadratic function.

Fractional Forms of Repeating Decimals: Use a system of equations to determine the fractional form of a repeating decimal.

Zero Coefficients: In the equation Ax + By = C, what happens when A or B or C is zero?

Changing Intercepts: Discover what happens to the graph when you vary the values for n and b in the equation g(n) = n

^{2}+ b.

Triangle from a Line: The line Ax + By = C will form a triangle with the x and y axis for what values of A, B, and C?

Does 0=0?: What happens when two equations in the form y = mx + b are set equal to each other?

Finding the Maximum: Find a shortcut to find the x-coordinate of the maximum or minimum of a parabola.

Minimum Criteria: Given a set number of points on the coordinate plane, how many lines or parabolas can you make through these points?

Fundamental Theorem of Algebra: What is the largest number of times a function can cross the x-axis? How about the smallest number of times?

Symmetry of Polynomial Functions: Describe the symmetry of a function.

Using Roots to Generate an Equation: Find an equation of a parabola given the point(s) where it crosses the x-axis.

Exponential Functions: When is a function in the form y=ab

^{x}increasing or decreasing?

Absolute Value Functions and Transformations: Describe how the graph of an absolute value function changes when you modify a, b, and c.

Reciprocal Functions: Describe any patterns you find when comparing a function to its reciprocal function.

Discriminant: How can the discriminant help you determine how many times the graph will cross the x-axis?

Forming a Square: Find four equations whose graphs are oblique (slanted) lines that will intersect to form the vertices of a square.

Sliding Graph: Examine the graphs of 2x + 3y = A.

Shifting Parabolas: Examine graphs of y=x

^{2}+ bx + 6, where b is any real number.

The Life of a Natural Number: Determine the behavior of natural numbers given that even and odd numbers act differently.

Earthquake Intensity: If a tremor can be thought of as a function of the form A(x - x

^{2}) in the interval(0, 1), examine quakes which are composed of a series of tremors.

Heron's Area: Explore the world of Heron triangles - triangles with sides of integral length and integral area.

Piano Frequency: Is the given relation comparing key position and frequency actually a function?

Altered State: Make a false equation correct by alternating the "punctuation" on the left side of the equation.

Comparing Temperatures: Use data to derive an equation that relates Celsius to Fahrenheit, Celsius to Kelvin, and Kelvin to Fahrenheit.

Pricing Pizzas: What type of function (linear, quadratic, or exponential) would you create to describe the cost of the pizza vs. the number of toppings?

Population Changes: Generate a function that will describe the population of your state vs. time.

Units of Speed: Find an equation that will compare speed units of miles per hour to kilometers per hour.

Keith's Pocket: How much money did Keith originally have in his pocket?

Symbolic Algebra: Determine which algebraic expression is greater.

Remainders and Factors: Determine the relationship of a group of positive integers that has 2 common divisors.

Reciprocal Sums: Given the sum of two positive integers, determine the smallest possible sum of their reciprocals.

Three Daughters: Determine the age of each daughter.

Piggy Savings: When will Parneshia's bank have twice as much money as John's?

The Frog Race: Two frogs have a race. Determine which frog wins the race.

Walking Rates: Determine the distance and time required for Amel to overtake Bonne, Amel's younger brother.

Counting Coins: How many coins does Kate have?

How Did We Do?: In a mathematics contest, how many of your team's answers were incorrect and how many problems were unanswered?

Formulaic Properties: Find values of x, y, and z, so that a given expression equals 18.

Legs and Seats: How many more legs than seats are in the leftover Seats 'R' Us factory inventory?

The Gonzalez Family: How old is each of the Gonzalez children?

The Game Show: Determine what each question is worth on a television game show.

Collecting Baseball Cards: On what day will Mike have exactly 100 baseball cards?

Lucky Find: How much money did Karen have before she found the $2?

Choosing Salaries: Your principal wants to hire you to work for her for ten days. Determine which way would you earn the most money.

Unknown Distance: Determine the distance between two points.

Integer Function: Find the smallest integer for which an expression results in an integer.

Nails in a Pail: Determine how much a pail and nails weigh.

Bouncing Ball: How many times does the special bouncing ball hit the ground?

Number Machine: What will the machine give me if I put in 100?

Summing to 100: Use the numbers from the given list no more than once to obtain a sum of 100.

Largest Combination: Find the largest possible value of a given expression.

Family Math: How old are a mother and son?

Double Trouble: Find a number that fits the description.

Judy's Gift: How much money did Judy give Dave?

Double Dollars: What is the fewest number of years until an investment doubles in value?

Sales Options: Which salary option should Mrs. Lee, the top salesperson in the company, take?

Library Fines: Help Minerva sort out her charges from the school library.

Going to the Movies: Predict the cost of the movie tickets.

Phone Tree: Determine the structure of a telephone tree used by eighth graders in Jefferson County who offered to help when the river flooded their town.

Paper Folding: Determine the thickness of folded paper.

Palindrome Odometer: Determine how fast a bus was traveling during two hours of time.

Mystery Number: What is the mystery number that fits the description?

Taking Classes: Given certain parameters, how many possible students can take math and English, science and English, and math and science?

Bouncing Ball: Use a Computer BasedLaboratory (CBL) device to investigate the motion of a bouncing ball.

Chill Out: Use a Computer BasedLaboratory (CBL) device to investigate what happens to the temperature of a cupof hot water while time is passing.

It's Getting Darker: Use a ComputerBased Laboratory (CBL) device to investigatehow the intensity of light changes with the distance from a light source such asa bulb or a flashlight.

Don't Push It: Use a Computer BasedLaboratory (CBL) device toinvestigate how the gas pressure changes with the volume.

Cereal Bars: Solve a system of equations to determine the units of ingredients needed to make a cereal bar.

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