What is the equation of a line that has a slope of - 2 and goes through the origin?

Answer:y = - 2x

Step-by-step explanation:

slope-intercept form is as follows

y = mx + b

You are given that the slope is - 2 and since the line passes through the origin, there is no y-intercept

So you just plug in the slope

y = - 2x + b

And since there is no y-intercept, you can take that out.

y = - 2x