Question

Help please 10 minutes

Answer 1

Slope Formula: (y² - y¹) / (x² - x¹)

1 + 7 = 8

-1-1 = -2

8/2 = 4

-2/2 = 1

4/1 = -4

Your answer is B.

Hope this Helps!!

Answer 2

The slope-intercept form:

`y=mx+b\\\\m=(y_2-y_1)/(x_2-x_1)`

We have (1, -7) and (-1, 1).

Substitute:

`m=(1-(-7))/(-1-1)=(8)/(2)=4`

Therefore we have

`y=4x+b`

Substitute the coordinates of the first point to the equation of line:

`-7=-4(1)+b`

Answer:

`(1+7)/(-1-1)=-4;\ -7=-4(1)+b`