Question

Which set of ordered pairs represents a function?

{(0, 1), (1, 3), (1, 5), (2, 8)}
{(0, 0), (1, 2), (2, 6), (2, 8)}
{(0, 0), (0, 2), (2, 0), (2, 4)}
{(0, 2), (1, 4), (2, 6), (3, 6)}

Answer 1

the definition of a function is that there are x values that represent one image only one. so there can be different image values(y-values) having the same x value but not the other way around

Answer 2

so would it be the first one

Answer 3

i think the last one
because it has unique x values for y

Answer 4

ok so r u sure the last one

Answer 5

yes draw it and you see it quite clear that there are unique x values because in the other ones it says not!

Answer 6

can you help me with this one


Look at the graph:

A coordinate grid from negative 16 to positive 16 is drawn with both in increments of 2. A straight line passing through the points 0, 2 and negative 8, 2, and 8, 2 is drawn.

What is the relationship between x and y?

y and x stay constant
y increases as x increases
y decreases as x increases
y stays constant as x increases

Answer 7

i think it is the first one

Answer 8

no because x= 1 gives y=3 and x=1 gives y= 5 that is no function

Answer 9

ohhh ok do you think it is the last one