Solve the system of linear equations by substitution. y=x−4y=4x−10with steps .

(2,-2)

Step-by-step explanation:

y=x−4

y=4x−10

Since both equations are equal to y, we can set them equal to each other.  Substituting x-4 = y into the second equation.

x-4 = 4x-10

Subtract x from each side

x-4-x = 4x-x-10

-4 = 3x-10

Add 10 to each side

-4+10 = 3x-10+10

6 = 3x

Divide by 3

6/3 = 3x/3

2= x

Now we need to find y.

y =x-4

y= 2-4

y = -2

2x^2+5x+17

your welcome. : )

answer: 94

step-by-step explanation: 79+91+92+94+94 = 450 divided by 5 (since there are 5 number that are being added) = 90