(-1,6),(3,-4) find the slope and y intercept.​

Y =-2.5X +3.5

Step-by-step explanation:

x1y1  x2y2

-16  3-4

(Y2-Y1)(-4)-(6)=   -10  ΔY-10

(X2-X1)(3)-(-1)=    4  ΔX4

slope=-2  1/2    

B=3  1/2    

Y =-2.5X +3.5    

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.