Find the slope and the y-intercept of the line. 8x+4y=-12

The slope of the line is -2 and the y-intercept of the line is (0, -3).

Step-by-step explanation:

8x+4y=-12

4y=-12-8x

4y=-8x-12

y=-8/4x-12/4

y=-2x-3

y=mx+b where m=slope and b=y-intercept

if the eqn of the parabola is f(x) = (x-4)(x+2), we need to mult. this out to find the coordinates of the vertex.

then f(x) = x^2 + 2x - 4x - 8, and f(x) = x^2 - 2x - 8.

one way in which you can find the vertex is to calculate x = -b / (2a).   here, that comes to

        )

x = = 1.   f(1) = 1^2 - 2(1) - 8 = - 9.   vertex is at (1, -9).

        2(1) 

find another point on the curve:   let x=0, for which y=-8.   then (0, -8) is on the curve.   plot the vertex and this point and draw a smooth parabola thru both.

hope this