4
lesson pretestMultiple Choice

Pretest

Question 4 • CMS 2026-2027 NC Math 1 CREDIT RECOVERY

Which ordered pair open paren A comma b close paren is the solution to the given system of linear equations? 3 A plus b is equal to 10 negative 4 A minus 2 b is equal to 2

Answer
A
open paren 3 comma 1 close paren
B
open paren 23 comma negative 11 close paren
C
open paren 1 comma 7 close paren
D
open paren 11 comma negative 23 close paren

Explanation

The equations are 3a + b = 10 and −4a − 2b = 2. Divide the second equation by −2 to get 2a + b = −1; subtracting this from the first gives a = 11, and then b = 10 − 3(11) = −23. The solution is (11, −23), choice B.

AI-written and checked against the verified answer.

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