Help I need help on this thanks !

Explanation:

Recall that y = mx+b is the slope intercept form

m = slope

b = y intercept

In this case, y = (4/5)x-3 has m = 4/5 as the slope and b = -3 as the y intercept.

In short, the slope is simply the number to the left of the x variable.

equal to

step-by-step explanation:

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.