Lesson 7: Solving Systems by Substitution (Alg1.2.13)
Math TalkHere are graphs of two equations in a system.
Select the systems which could be represented by the graphs. Be prepared to explain how you know.
Four SystemsHere are four systems of equations you saw earlier. Solve each system.
Then, check your solutions by substituting them into the original equations to see if the equations are true. A.
B.
C.
D.
Need more practice?Solve the following the systems of equations by substitution.