Y=2x+8
Y=3x+1
How to solve by substitution

The substitution method can be used for any set of equations.

I'll proceed assuming you meant to ask how the substitution method can be used to solve for x and y in the 2 equations you entered.

y=2x-1 and y=-3x+4

Since both expressions on the right sides of the eqns = y, they equal each other.

2x-1 = -3x+4

This is substitution, the right sides were substituted for y.

Add 3x

5x-1 = 4

Add 1

5x = 4

x = 1 x

Now substitute 1 for x into either eqn to find y.

y = 2*1-1

y = 1 y

we're done.

Step-by-step explanation: