Question

Which of the following are NOT one-to-one functions? Select all that apply.

Answer 1

so let's look at the numbers more carefully this time

if you see a table that has the same number in the y column, then it isn't one-to-one because it wouldn't pass the horizontal line test

Answer 2

do the same number have to next to each other

Answer 3

do the same number have to next to each other

Answer 4

D and B?

Answer 5

it would have different x numbers but if it has the same y-value then it's not one-to-one

Answer 6

That's right

Answer 7

Do you understand the vertical line test and the horizontal line test?

Answer 8

no