Question

is this relation a function {(14,15),(5,7),(3,10),(11,1),(5,8)} yes or no ?

Answer 1

If for every x value there is only one y value then, yes, it is a function.

Answer 2

How may values of y can there be if x = 5?

Answer 3

idk

Answer 4

look at that pair (5,7) and (5,8), what is the value of x and what is the value of y?

Answer 5

x is 5 and y is 7?

Answer 6

and?

Answer 7

x is 5 and y is 8

Answer 8

so what does that tell us?

Answer 9

that they are functions ?

Answer 10

we have two DIFFERENT values of y for the same x. Look at my first statement above.

Answer 11

okay and

Answer 12

so since we have 2 different values of y (7&8) for the one value of x (5), this is not a function

Answer 13

computer fried, had to get another