Question

use the substitution beth of to solve the system y = -3, y = 2x + 1

Answer 1

To solve the system using the substitution method, we can start by setting the two equations equal to each other and solve for x.

-3 = 2x + 1

Subtract 1 from both sides:

-4 = 2x

Divide both sides by 2:

-2 = x

Now that we have the value of x, we can substitute it back into one of the original equations to solve for y. Let's use the second equation:

y = 2x + 1

Substituting x = -2:

y = 2(-2) + 1
y = -4 + 1
y = -3

So the solution to the system of equations is x = -2 and y = -3.