Question

Please Help! Medal and Fan!!!! :)
The table below shows the values of y for each value of x:
x= 2,3,4,5
y=1,1,-3,-3

Part A: Does the table represent a relation that is a function? Justify your answer by using the values shown in the table.

Part B: The function f(h) shown below represents Kylie's total earning from working in a cafe for h hours of work: f(h) = 15h+5
Calculate and interpret the meaning of f(8)

Part C: Write and ordered psi to represent the input and output of the function in Part B when Kylie works for r hours.

Answer 1

@shinalcantara Could you please help me?

Answer 2

@gorv Could you please help?

Answer 3

@texaschic101 could you please help me?

Answer 4

what is property of function??

Answer 5

function should be one one

Answer 6

Its not a function for part A because it repeats right?

Answer 7

Am I right?

Answer 8

that is one value of y for one value of x

Answer 9

I have part b but I'm not sure about A and C

Answer 10

Okay I'm confused :(

Answer 11

you now vertical line test

Answer 12

? No I'm not on a vertical line test

Answer 13

one x should tell one value of y

Answer 14

it should not tell more thn one value of y

Answer 15

So it is not a function because Y has more than 1

Answer 16

x=y^2
x=4 mean y=2 or y=-2

Answer 17

if we put y=2 it means x=4 and if y=-2 that also mean x=4
here x=4 alone represnet 2 values of y

Answer 18

so it should not be like this

Answer 19

in given Q there is nothing like this so it is a function

Answer 20

wait so it is a function...?

Answer 21

yeah

Answer 22

f(h)=15h+5

Answer 23

f(8) means h is replaced by 8

Answer 24

that is value of function when h=8

Answer 25

I know part b
f(h)=15h+5
f(8) = 15(8)+5
f(8)= 120+5
f(8)= 125

Answer 26

f(h)=15h+5
plug in h=8 here and calculate f98)

Answer 27

yeah well done

Answer 28

:D thanks now part c Im kinda confused on

Answer 29

for r hours means h= r hours so plug in h=r in place of h everywhere

Answer 30

so like f(h)=15h+5 it would be like f(r)=15r+5 ?

Answer 31

yeah you are right

Answer 32

Sooo like
F(r)= 15r+5
35, 50, 65, 80
(2,35) (3,50) and so on
so the answer would be (r, 15r+5)

Answer 33

^_^ Okay! I think i got it thanks @gorv for all your help i medaled you!!!