### Home > CCA > Chapter 5 > Lesson 5.1.1 > Problem5-7

5-7.

Solve the following systems of equations algebraically. Then graph each system to confirm your solution. Graphing Calculator (Desmos) Homework Help ✎

1. $x+y=3$
$x=3y-5$

• Replace $x$ with $3y−5$.

• Solve for $y$.

• Solve for $x$.

1. $x-y=-5$
$y=-2x-4$

• Replace $y$ with $−2x−4$.

• Solve for $x$.

• Solve for $y$.

In the eTool below type points into the tables to explore where the two graphs intersect.
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