Question

Which equation can be used to describe the relationship between x and y shown in the table?

Answer 1

y = 3x + 9

Explanation:

y = mx + b

As the values of x increase by 1, the values of y increase by 3.

That means the slope, m, is 3.

m = 3

At x = 0, y = 9. That means the y-intercept, b, is 9.

b = 9

y = mx + b

y = 3x + 9