Solve the system of linear equations below. y = -2x + 19
y = x + 7
A. x = 4, y = 11
B. x = -12, y = -5
C. X = -4, y = 3
D. x = 8, y = 3

A. x=4 y=11

Step-by-step explanation:

y=x+7

y=-2(y-7)+19

y=-2y+14+19

y=-2y+33

y+2y=33

y(1+2)=33

y=33/3

y=11

x=4

fa tha first one you gonna add y to both sides

it look like this

x-y+y=6+y

x=y+6

therefore your answer is

x =y+6

fa tha second one

you gonna flip tha equation

it gonna look like x-4y=y

then add 4 to both sides

it gonna look like tha

x-4 +4 =y +4

so therefore tha answer is x=y+4

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.