Question

John's mother took him to the doctor's office. His height measured 36 inches. For the past 4 years his height has grown at the rate of 2 inches per year.
Which equation represents John's height after y years?


h=36y+2


h=18y


h=2y+36


h=38y

Answer 1

Answer: The correct answer is h = 2y + 36.

This is an example of an equation in slope intercept form. The value in front of the y is the slope. It is 2 because he is getting taller by 2 inches every year.

The 36 is the y-intercept or the starting point of the graph. We used 36 because that was his height when we started measuring.