Question

Please help
@3mar

Answer 1

@mathmale

Answer 2

would it be ii and iv or just iv

Answer 3

@.Sam. @Directrix

Answer 4

Explain the "horizontal line test."

Answer 5

A function has an inverse only if .... (can you finish this sentence?)

Answer 6

only if the line does not intercept at any point @mathmale

Answer 7

Not quite. If you begin with a graph and draw a horiz. line thru it, there could be one of three possible outcomes: 1) the line intersects the graph once, 2) the line intersects the graph twice or more, 3) the line doesn't intersect the graph at all.

Answer 8

oh ok

Answer 9

so would that mean that my answer is wrong?

Answer 10

@mathmale

Answer 11

I didn't say that, did I? I'm more interested in whether you understand the concepts involved here.

Look at the first graph. Does it pass or fail the horiz. line test? Explain.

Answer 12

fail because it intercepts the graph twice

Answer 13

@mathmale

Answer 14

ii and iv pass because it only intercepts once

Answer 15

@mathmale

Answer 16

You answered my question correctly. Give me a minute more, please.

Answer 17

Excuse me, but I don't see your answer to the original question. You need to choose A, B, C or D.

Answer 18

a

Answer 19

that would be ii and iv

Answer 20

@mathmale

Answer 21

I agree. Nice work.

Answer 22

thank you for your help

Answer 23

Sorry, I was not here!