Solve for y in this system 3x + 4 = y -3x -8 = 3y

y=4

Step-by-step explanation:

Let's solve your system by substitution.

x+y=7;x+2y=11

Step: Solve x+y=7 for x:

x+y=7

x+y+−y=7+−y(Add -y to both sides)

x=−y+7

Step: Substitute−y+7forxinx+2y=11:

x+2y=11

−y+7+2y=11

y+7=11(Simplify both sides of the equation)

y+7+−7=11+−7(Add -7 to both sides)

y=4

Step: Substitute 4 for y in x=−y+7:

x=−y+7

x=−4+7

x=3(Simplify both sides of the equation)

x=3 and y=4

answer:   c ?

step-by-step explanation:

d. corresponding side lengths in similar triangles are proportional in length.

step-by-step explanation: