Answer:
rectangle
Step-by-step explanation:
7^2 = 6^2 + 9^2 - 2(6)(9)cos(m)
-68 = 2(6)(9)cos(m)
cos(m) = -0.6296
m = arcos ( -0.6296)
m = 129.0 degrees
250 is one inch
100 is 0.4 inch
10 is 0.04 inch
Definitely Graph C.
The dots are aligned correctly to the line better than the other graphs.