Algebra practice question

Answer: -4 or −4

Line p has slope (5 − 1)/(2 − 0) = 2. Parallel lines share a slope, so line q is y = 2x + b. Through (3, 2): 2 = 6 + b, b = −4.

Common wrong answers

If you answered 1

1 is line p's y-intercept. Line q is a different line through (3, 2).

If you answered 2

2 is the slope, or the y-coordinate of the given point, not the intercept of q.

If you answered 4

4 has the wrong sign: 2 = 2(3) + b gives b = 2 − 6 = −4.

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