1.
equation of line that passes through (2, -3) with a slope of 12 is
y + 3 = 12(x - 2)
y + 3 = 12x - 1
y = 12x - 4
The y-intercept is the point where x = 0 . When x = 0 ,
y = 12(0) - 4 = -4
When x is 0 , y is 4 . So the y-coordinate of the y-intercept is 4 .