Question

What is the equation of the following line? Be sure to scroll down first to see all answer options. (0, 0) (3,-9)​

Answer 1

Answer: C. y = -3x

Explanation:

Since the line runs through the origin (0, 0), we don't have to write a y-intercept. To calculate the slope, we determine the change in y value over the change in x value.

Looking at the graph, we see that for every +1 x, we have -3 y, so the slope is -3, which we multiply by x in the equation.

Answer 2

Equation to find the slope

`(y2-y1)/(x2-x1) =(-9-0)/(3-0) = -9/3 = -3x`

y=-3x

hope that answers your question

Explanation: