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Work shown below!

Step-by-step explanation:

Slope-intercept form: y = mx + b

11.

12. 3x - 7y = 28

Subtract 3x from both sides;

-7y = -3x + 28

Divide both sides by -7

13.

Distribute;

Subtract 4 from both sides;

ddd

step-by-step explanation:

the answer is (-8,-5)

step-by-step explanation:

the endpoint to midpoint is half the length. the length is (-2,-1) so when you are at the midpoint just add it to it to find your answer -6+(-2)= -8 and -4+(-1)=-5 so (-8,-5)