Consider the following pair of equations: y = 3x + 3
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

(-2, -3)

Work/explanation below:

1. Set the equations set to each other, since they both equal to y. The equation is now 3x + 3 = x - 1.

2. Solve for x by getting it by itself, as follows:

2a. Add 1 to both sides. The equation is now 3x + 4 = x.

2b. Subtract 3x to get -2x on the right side of the equation. The equation is now 4 = -2x

2c. Divide both sides by -2. The result is x = -2

3. Plug x in as -2 into any equation to get the y value. -2 - 1 = y That means y is -3.

4. Put the x and y value in coordinate style for the final (-2 , -3).

Hope that helps!

:D

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