URGENT PLEASE ANSWER WILL MARK BRAINLIEST FOR THE FIRST RIGHT ANSWER Write 3 key characteristics of a direct variation.

1) The rate of change is constant ($$ 2) The line passes through the origin (0, 0). 3) The equation of the direct variation is $$ y =1 x or simply $$

1) The rate of change is constant ($$ 2) The line passes through the origin (0, 0). 3) The equation of the direct variation is $$ y =1 x or simply $$

Step-by-step explanation:

I know this because I done this last week

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

8(-10x+3.5y-7)

8×-10x + 8×3.5y + 8×-7

-80x + 28y - 56

therefore

-80x+28y-56 is the correct answer