7
lesson pretestMultiple Choice

Pretest

Question 7 • Algebra I

What is the y -value of the solution to the system of equations? 3 x plus 5 y is equal to 1 7 x plus 4 y is equal to negative 13

Answer
A
negative 3
B
5
C
negative 1
D
2

Explanation

Multiply the first equation by 7 and the second by 3 to get 21x + 35y = 7 and 21x + 12y = -39. Subtract the second equation from the first: 23y = 46, so y = 2. The correct choice is 2.

AI-written and checked against the verified answer.

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