Answer:
C. 1/49
Step-by-step explanation:
When there is a negative sign located inside the power, you must eliminate it. To do so, put the whole expression under 1, and then simplify from there:
7^-2 = 1/(7^2)
Simplify: 7^2 = 7 x 7 = 49
1/49 is your answer.
~
n should be 8 according to mathmatical laws
slope = -1
y2-y1 divided by x2-x1
3-7= -4
2-(-2) = 4
-4 divided by 4 = -1
I think we need to see something
. +12 on both sides to get 
. Divide by -8 to get 