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10-19.

The equation is already in slope-intercept ( y = mx + b ) form.

m = slope
b = y-intercept

y-intercept = (0, −7)

Solve the equation for y.
If you are having trouble, refer to part (a).

Start by finding the slope.

Substitute a point into the equation
y = mx +b and solve for b, the y-intercept.
4 = 2(8) + b
4 = 16 + b
−12 = b

Slope = 2
y-intercept = (0, −12)