Question

Solve this linear equation using substitution. (Please show work!)

y = -x
y= 3x - 4

Answer 1

X=1

Explanation:

So if you look at the two y= equations, you'll see that you can make them equal two one another because they both equal y

Placing the -x in place of y for it to look like this; -x = 3x-4. Subtract the 3x to the other side to get -4x =-4. Then divide the 4 from the x to isolate it and you get x=1!

Hope that helps!

Answer 2

Answer:Under↓↓↓

Explanation:

-x=3x-4 (substitute -x for y)

-4x=-4 (Subtract 3x from both sides)

x=1 (Divide both sides by -4)

Since y=x then y=1