Question

Which row of the input/output table is incorrect?

y = 3x + 5
x y
A 4 20
B 7 26
C 9 32
D 11 38
Row A
Row B
Row C
Row D

Answer 1

Row A is your answer

Explanation:

Note that in row A, x = 4, y = 20

Plug in the corresponding numbers to the corresponding variable:

y = 3x + 5

20 = 3(4) + 5

Simplify. Multiply 3 with 4 and then add 5

20 = 12 + 5

20 ≠ 17 ∴ Row A is your answer

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