Question

Please help! This is due by midnight! i have no clue what to do! medal, fan, and testimonial!

Answer 1

if one value of x gives two or more values of y ,then it is not a function.

Answer 2

What specifically sets C apart from the other answer choices?

Answer 3

all the numbers are positive, while on a,b,and d there is at least one negative?

Answer 4

@mathmale

Answer 5

look at option C

Answer 6

i dont know

Answer 7

i dont understand @surjithayer

Answer 8

Yes, as Surj said.

Lets look at A first.
We have 3 (X,Y) values

Are any of those 3 "X" values the same number?

Answer 9

no

Answer 10

@FortyTheRapper

Answer 11

I can help

Answer 12

When looking at functions, the simplest way of determining if it's a function or not is by the vertical line test

Answer 13

You basically take a pencil or your hand vertically, and see if the "function" touches the pencil/hand more than once

Answer 14

When a function touches the pencil vertically twice, it means that for one given x value, there are multiple y values

Answer 15

Does this make sense?

Answer 16

Right, there not the same. That means A is a function. Now look at C

Answer 17

Please look at Option C again. You'll note that 0 appears twice as the first element of each coordinate pair (x,y), and that there's a different y value for each. No soap. This means C is not a function. A function is notable in that there is never more than 1 y-value associated with any given x value. A function is a "one to one" rule.

Answer 18

Thanks everyone. I figured it out. I went on a LL and asked them to explain it and they did.