Lets rewrite this into point-slope, y=mx+b.
y-8=7(x+3)
y-8=7x+21
y=7x+29
Now we can find the slope, which is 7. Now, because this is a linear line, we can substitute points to find which answer is correct.
Option A)
(8)=7(-3)+29
8=-21+29
8=8 TRUE
Option A is correct,
slope: 7
point: (-3, 8)