
We have two points:

The point slope form of the line:

Substitute


Answer:

Answer:
C. 3, -7
Step-by-step explanation:
x^2 +4x-21 =0
Factor
What 2 numbers multiply to -21 and add to 4
7*-3 = -21
7-3 = 4
(x+7) (x-3) =0
Using the zero product property
x+7 =0 x-3=0
x+7-7=0-7 x-3+3=0+3
x = -7 x=3
Your equation is correct.

Answer:
I THINK MAYBE C hope this helps
Step-by-step explanation:
In a parallelogram, consecutive angles are supplementary.
3y + 78 = 180
3y = 102
y = 34