4
QuizMultiple Choice

Using Equations to Represent Trend Lines — Quiz

Question 4 • Mathematics 8

Darren is finding the equation in the form y is equal to m x plus b for a trend line that passes through the points open paren 2 comma 18 close paren and open paren negative 3 comma 8 close paren Which value should he use as b in his equation?

Answer
A
14
B
negative 34
C
2
D
negative 19

Explanation

First find the slope through (2, 18) and (−3, 8): (18 − 8) ÷ (2 − (−3)) = 10 ÷ 5 = 2. Then use y = mx + b with (2, 18): 18 = 2(2) + b, so b = 14. Darren should use 14, choice A.

AI-written and checked against the verified answer.

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