Question

How do you write the equation of a line that has a slope of -2 and passes through (3, -1)?

Answer 1

`y=-2x+5`

Explanation:

Use slope-intercept form or point-slope form. Here, I will use slope-intercept form.

`y=mx+b`

Solve for b using the slope, m, and the (x,y) points of (3,-1).

`y=-2x+b`

`-1=(-2*3)+b`

`-1=-6+b`

`b=-1+6=5`

`y=-2x+5`