Question

Using the slope formula, if y = 59, slope is 9, and the y-intercept is -6, solve for x. Slope formula: y = mx + b

Answer 1

y = mx + b    "m" is the slope, "b" is the y-intercept

You know:

m = 9

b = -6

y = 59

Plug this into the equation

y = mx + b

59 = 9x + (-6) ----> 59 = 9x - 6    Solve for x (get x by itself) Add 6 on both sides

65 = 9x      Divide 9 on both sides

$\frac{65}{9}=x$