Question

Determine whether the relation is a function. {(-7, -7), (-7, -8), (-1, 4), (6, 5), (10, -1)} A. Not a function B. Function

Answer 1

lets start with what do you think, and why?

Answer 2

I choose B am i wrong

Answer 3

and your reasoning?

Answer 4

why do you think b is the right answer?

and dont say you guessed

Answer 5

negatives dont mean a thing...

defining a function

basically, think of it as a machine, where x goes in one end, and y comes out the other

now, what wouldn't be a function would be like a machine where x goes in one end and 2 different y's come out the other

Answer 6

ok

Answer 7

so, look at the first 2 set of numbers

if -7 goes in one end and -7 comes out the other

then how can -7 go in the same machine but -8 come out as well?

Answer 8

o ok i get you now so when you continue that method (about the machine) it come to conclude that none of it is a function tight. so the answer is A

Answer 9

i mean right not tight

Answer 10

yea
its not a function because for a single input (-7) , you get two output (-7 and -8)

for it to be a function, for everything single input, there must be a single output
although in a function, its fine if the outputs are the same,

Answer 11

ok thank you for ur help

Answer 12

another way of picturing it would be

Answer 13

perfect example thank u again

Answer 14

this is allowed

Answer 15

i understand now yayyy lol :D

Answer 16

good for you