1
QuizMultiple Choice
Solving Linear Systems by Substitution
Question 1 • Crowley Credit Recovery Algebra II B
Lucia tried to solve the system below. Lucia’s Work What error did Lucia make?
Answer
A
When Lucia solved the second equation for x, she subtracted 2y from both sides.B
When Lucia solved for the value of y, she treated –2y as 2y.C
When Lucia solved for the value of x, she added 18 to both sides.D
When Lucia solved the second equation for x, she treated –2(–9) as 18 instead of –18.