y = −2x + 8
y = x − 1

Explain how you will solve the pair of equations by substitution. Show all the steps and write the solution in (x, y) form.

Question

y = −2x + 8 
y = x − 1 

Explain how you will solve the pair of equations by substitution. Show all the steps and write the solution in (x, y) form.

anonymous · Answer

@Luv_luvi7 @Hayleymeyer @kevin_bridges

michele_laino · Answer

since from your second equation, I read:
y=x-1, 
then I replace y with x-1 into your first equation, so I get this:
x-1=-2x+8
now, please solve it for x

anonymous · Answer

3

welshfella · Answer

3x = 9
x = 3

that is correct

anonymous · Answer

but that i not really my question i don't think

welshfella · Answer

Now to find y plug x = 3 into the first eqation and solve for y

welshfella · Answer

yes 
Michel llaino has explained how to find x and i have explained how to get y.