3
QuizMultiple Choice

Solving Systems of Linear Equations: Graphing

Question 3 • TX-Algebra I A-CR

What value of b will make the system of equations have an infinite number of solutions?y = -2x + b 4x + 2y = 8

Answer
A
2
B
8
C
4
D
-4

Explanation

Rewrite the second equation, 4x + 2y = 8, by dividing every term by 2: 2x + y = 4, or y = -2x + 4. For the system to have infinitely many solutions, both equations must describe the same line, so b must equal 4. The correct choice is C, 4.

AI-written and checked against the verified answer.

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