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

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.

The answer to your question is b

So the first thing we do is to multiply the top equation by 3. the reason i want to do this is i notice there will be a 6y on both equations and can possibly add/subtract them. so we get 6y = -3x + 27. adding that and the second equation we get 6x = 27-15 which is 12. divide by 6 and we get 2. ∴ x = 2. substituting 2 into the first equation we get 2y = -2 + 9 which is 7. divide by 2 and we get 7/2. ∴ y = 7/2, x = 2.