Question

Which function rule matches the input-output table? 1 Input, X Output, y 3 4 2 11 5 7 15 19 23 o y = 4 + 3x oy-3+44 oy-3 + 5x y-2 +42

Answer 1

Replace each x value and see if it matches its output (y value) , for each function.

A.

y= 4+ 3x

x=1 ,y=7

(7)=4 + 3(1)

7= 4 + 3

7=7

x=2, y=11

11= 4 +3(2)

11= 4+6

11= 10 NOT EQUAL

B.

y= 3 + 4x

x=1,y=7

(7)= 3 +4 (1)

7= 3+4

7=7

x=2, y=11

11= 3 + 4(2)

11=3 +8

11=11

x=3, y=15

15= 3 + 4(3)

15=3 + 12

15=15

x=4, y=19

19= 3 + 4(4)

19=3+16

19=19

x=5 , y=23

23 = 3 + 4(5)

23= 3 + 20

23=23

Correct option = y=3+4x