Question

Write an expression that represents the height of a tree that begins at 9 feet and increases by 3 feet per year. Let y represent the number of years.

Answer 1

h=3y+9

Explanation:

let h represent the height of the tree

h=3y+9

Answer 2

h=3y+9

Explanation:

We will write an expression using the y=mx+b format.

h in this case will be the height at any given year.

3 is the rate at which the three grows, y will represent any given year.

9 is the starting rate, or your y intercept.