Which of the following sets of data does not represent a function?

set a
x
y
6
3
8
4
5
7
9
2

set b
x
y
0
3
1
8
2
8
3
-7

set c
x
y
10
7
20
11
30
9
40
7

set d
x
y
3
9
2
2
8
-3
2
1
a.
set a
b.
set b
c.
set c
d.
set d

Graph g(x)=2cosx . use 3.14 for π . use the sine tool to graph the function. graph the function by plotting two points. the first point must be on the midline and closest to the origin. the second point must be a maximum or minimum value on the graph closest to the first point.

Mrs. gehrke said cheddar weighs 16.8 pounds. he actually weighs 15.2 pounds. what is the percent error?

Quadrilateral efgh was dilated with the origin as the center of dilation to create quadrilateral e'f'g'h'. the quadrilateral was dilated using a scale factor of 2.5. the lengths of the sides of quadrilateral efgh are given. what is the length of side f'g'?