Question

The points 3, 9 and -3,-9 are plotted on the coordinate plane with the equation y=a*x. What is the value of a?

Answer 1

3

Explanation:

The value of "a" can be found by dividing the equation by x, then substituting values from either coordinate pair:

a = y/x = 9/3 = 3

The value of "a" is 3.