So what you do is divide 12 and 15 to get 0.8 so your answer is 8 mph (constant rate)
If you mean 4 times -2 thats -8 if you mean 4x-2 then you cant do that
B (1,0). -2 + 3 = 1. -2 + 2 = 0.
The gradient is the direction of steepest ascent. 5 is the coefficient of x, <span>y=mx+c,</span> so 5 is the gradient to this algebraic equation.<span />