Question

which set of ordered pairs is made up of points on the graph of the function below?
y = -2x + 8

a. (-1,10), (0,8), (1,6), (2,4)
b. (10,-1), (8,0), (1,6), (2,4)
c. (10,-1), (8,0), (6,1), (4,2)
d. (-1,10), (8,0), (1,6), (4,2)

Explanation:

Step1: Check Option A

For each ordered pair \((x,y)\) in A: \((-1,10)\): \(y = -2(-1)+8 = 2 + 8 = 10\), correct. \((0,8)\): \(y=-2(0)+8 = 8\), correct. \((1,6)\): \(y=-2(1)+8 = 6\), correct. \((2,4)\): \(y=-2(2)+8 = 4\), correct.

Step2: Check Option B

\((10,-1)\): \(y=-2(10)+8=-12
eq -1\), incorrect.

Step3: Check Option C

\((10,-1)\): \(y=-2(10)+8=-12
eq -1\), incorrect.

Step4: Check Option D

\((8,0)\): \(y=-2(8)+8=-8
eq 0\), incorrect.

Answer:

A. \((-1,10)\), \((0,8)\), \((1,6)\), \((2,4)\)