Which of the following shows a function? (1 point)

Question

xy-3xym
Input
Output
2
20
4
30
3
40
x-values
y=2x+3
y-values
(x, y)
-5
y=2(-5)+3
-7
(-5,-7)
-3
y=2(-3)+3
-3
(-3,-3)
0
y=2(0)+3
3
(0,3)
1
y=2(1)+3
5
(1,5)
2
y=2(2)+3
7
(2,7)
4
y=2(4)+3
11
(4,11)
{(0,-4) (2.7) (0.4) (1.9) (3.7)}

Answer 1

The following shows a function:
y = 2x + 3

This function has an input (x-values) and output (y-values) relationship, and provides a clear mapping of x-values to y-values.