Use the point-slope form of the equation of line y – 8 = 7(x + 3) to identify a point the line passes through and the slope of the line. slope: 7 point: (-3, 8) slope: 7 point: (3, 8) slope: 7 point: (8, 3) slope: 7 point: (8, -3)

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)

I'm not sure but i think it's 1670km/h