We are asked to use substitution. Luckily, it is already setup for this because one of the equations has one of the variables solved for, namely the y=3x-2 equation. We are going to insert y=3x-2 into x-y=4 and solve for x.

x-y=4 (with y=(3x-2) ):

x-(3x-2)=4

Distribute:

x-3x+2=4

Combine like terms:

-2x+2=4

Subtract 2 on both sides:

-2x =2

Divide both sides by -2:

x =-1

Now if y=3x-2 and x=-1, then y=3(-1)-2=-3-2=-5.

So the solution is (-1,-5).

3 0

3 years ago

Find the values of c and d

forsale [732]

$36 + 3c = 90 \\ 3c = 90 - 36 \\ 3c = 54 \\ c = 18$

$5d + 10 = 90 \\ 5d = 90 - 10 \\ 5d = 80 \\ d = 16$

4 0

4 years ago

A group of 10 friends are in line to see a movie. The table shows how much different groups will pay in all. Predict how much t

slega [8]

Answer: Wheres the table

Step-by-step explanation:

4 0

3 years ago