Question

What is the y−coordinate of the y−intercept of the line that passes through the points (−4, −4) and (4, 8)?

Answer 1

Slope of the line is m = (8-(-4)) / ( 4-(-4)) = 12/8 = 1.5
For any straight line, y=mx+c, where m is the gradient and c is the y-intercept

hence at point (4,8)
8 = 1.5*4 +c
c = 8 - 6 =2
Hence the equation of the line passing through (-4,-4) and (4,8) will be
y=1.5x+2

So the y-intercept will be 2

Answer 2

Thank you soo much :)

Answer 3

you're welcome =D