Question

PLZ HELP


Equation A: y = x + 1
Equation B: y = 4x + 5

Which of the following steps can be used to find the solution to the set of equations?

x + 1 = 4x + 5
x = 4x + 5
x + 1 = 4x
x + 5 = 4x + 1

Answer 1

@JoannaBlackwelder

Answer 2

Any thoughts?

Answer 3

not really I'm so confused

Answer 4

Ok, they are using the method of substitution.

Answer 5

ok

Answer 6

That is where you solve for a variable and plug it into that variable in the other equation.

Answer 7

Both of these equations are already solved for y.

Answer 8

So, we can take what y= in one equation, and plug it in for y in the other equation.