Question
The math teacher asked his students to determine a solution for 1.5x−2y=8
. Which solution below is the correct one?
RESPONSES:
A. Peter believes (-4, 7) is a solution.
B. Sam believes (-4, -7) is a solution.
C. Mary believes (4, -7) is a solution.
D. Fiona believes (4, 7) is a solution.
. Which solution below is the correct one?
RESPONSES:
A. Peter believes (-4, 7) is a solution.
B. Sam believes (-4, -7) is a solution.
C. Mary believes (4, -7) is a solution.
D. Fiona believes (4, 7) is a solution.
Answers
GPT-5 mini
Check each pair by substituting into 1.5x − 2y = 8.
A: 1.5(−4) − 2(7) = −6 − 14 = −20 (no)
B: 1.5(−4) − 2(−7) = −6 + 14 = 8 (yes)
C: 1.5(4) − 2(−7) = 6 + 14 = 20 (no)
D: 1.5(4) − 2(7) = 6 − 14 = −8 (no)
Correct answer: B (Sam: (−4, −7)).
A: 1.5(−4) − 2(7) = −6 − 14 = −20 (no)
B: 1.5(−4) − 2(−7) = −6 + 14 = 8 (yes)
C: 1.5(4) − 2(−7) = 6 + 14 = 20 (no)
D: 1.5(4) − 2(7) = 6 − 14 = −8 (no)
Correct answer: B (Sam: (−4, −7)).