what is (-4,4) and (4,8) in slope-intercept form
the slop and y intercept
You find the slope, m = (y2 - y1) / (x2 - x1)
m = (8 - 4) / (4 - (-4))
m = 4 / (4 + 4)
m = 4 / 8
m = 1/2
Find the y-intercept, b = y - mx, using point 2
b = 8 - 1/2(4)
b = 8 - 2
b = 6
You can also use point 1
b = 4 - 1/2(-4)
b = 4 + 2
b = 6
As you can see, it doesn't matter which point you use,
the y-intercept is the same; we are dealing with only one line here.
The equation we are looking for is:
y = 1/2x + 6