Problema Solution
Water Is draining out of the bathtub at a constant rate. After 2 minutes, the water in the bathtub is 8 inches deep.
Eight minutes Later, the water was 4 inches deep.
Write an equation that represents the depth y (in inches) of the water in the bathtub after x min
&
How much water was in the bathtub before you started draining the tub?
Answer provided by our tutors
A.) Y = -1/2x + 9
Where 1/2x is a fraction
Work is m = (4-8)/(10-2) = (-4/8) = -1/2
y=mx+b
8 = -1/2(2) + b
8 = -1+b ---> b=9
Giving you the answer of Y = -1/2x + 9
B.)9 Inches --> this is the y-intercept when x=0 and y=9