Question

Two quantities are related, as shown in the table:



x y
2 10
4 9
6 8
8 7


Which equation best represents the relationship?

Group of answer choices

y = negative 1 over 2x + 11

y = 2x + 11

y = 1 over 2x + 11

Answer 1

y = (-1/2)x + 11

Reason: y decreases by 1 when x increases by 2, so slope = -1/2. Using (2,10): 10 = (-1/2)(2) + b ⇒ b = 11, so y = -1/2 x + 11.