Answer: See explanation
Explanation:
Slope = -2 - 7 / 8 - (-1) = -9/9 = -1
Slope = -1
Point slope form: y - y₁ = m (x - x₁)
y₁ = 7
x₁ = -1
y - 7 = -1 ( x - [-1])
y - 7 = -1 ( x + 1)
y - 7 = -1x - 1
Add 7 to both sides
y = -1x - 1 + 7
y = -1x + 6 or y = -x + 6
Standard Form: Ax + By = C
I didn't explain this part very well last time. You can use the point-slope form AND the slope-intercept form to find this.
Point slope form- y = -x + 6
Standard form:
y = -x + 6
Add x to both sides
x + y = 6 or -x - y = -6
Slope intercept form: y = mx + b
m = -1
y-intercept = 6
y = -1x + 6 or y = -x + 6
Hope this helped!