Problema Solution
A scatter plot of datacomparing the tie and minutes Beverly spends studying her math test and the score she received on the test contains the ordered pairs (45,89) and (60,94). Which is the slope intercept form of an equation for the line of fit?
Answer provided by our tutors
The line equation in slope intercept form is:
y = mx + b, where m = slope, b = the y - intercept
m = (94 - 89)/(60 - 45)
m = 5/15
m = 1/3
y = (1/3)x + b
We will find using the fact that the line goes trough (60,94):
94 = (1/3)*60 + b
20 + b = 94
b = 94 - 20
b = 74
The slope intercept equation of a line through (45,89) and (60,94) is y = (1/3)x + 74.