Answer:
y+1=-2(x-5) - Point Slope Form
y=-2x+9 - Slope Intercept Form
Explanation:
We will be using point-slope formula, as attached in a picture below.
1) Plug in the slope -2 as "m" in point slope form, along with the two points, (5, -1)
y+1=-2(x-5)
2) Next, if you want to put the line into slope-intercept form, you will need to distribute -2 to x and -5:
y+1=-2x+10
3) Now, subtract 1 from both sides:
y=-2x+9