Algebra practice question

Answer: 2

The points give a + 2b = 10 and 3a + b = 10. From the first, b = 10 − 2a, so 3a + 10 − 2a = 10 and a = 2.

Common wrong answers

If you answered 4

4 is b.

If you answered 10

10 is the constant.

If you answered -2

−2 has the sign wrong.

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