Each equation is in y = mx+b form (slope intercept form)
The m is the slope. It is the number just to the left of the x
y = x+3 is the same as y = 1x+3 since 1*x = x
The slopes for A, B, C, and D are: 1, -7, 3, and 5 respectively
The value -7 is furthest away from zero on the number line. So y = -7x+7 has the steepest graph
Answer: Choice B)