AlgebraEasy–MediumSlope plus intercept after rearranging
Algebra practice question
The equation 6x − 2y = 12 can be rewritten in the form y = mx + b, where m and b are constants. What is the value of m + b?
Answer: -3
−2y = −6x + 12 gives y = 3x − 6, so m + b = 3 − 6 = −3.
Common wrong answers
- If you answered 3
- 3 is m alone.
- If you answered 9
- 9 uses b = 6, losing the sign.
- If you answered -9
- −9 uses m = −3.
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