Question

please help i give medals!

write a function rule for the table given below

x | 0 | 1 | 2 | 3 | 4 | 5 |
y |-3 | -2 | -1 | 0 | 1| 2 |

a y=x+3
b y= -2x
c y= x-3
d y= x+1

Answer 1

select any two points
as (0,-3) and (1,-2)

Answer 2

then are you know what the method that used for form a straight line eqution bu using two points?

Answer 3

no idea @esamalaa

Answer 4

\[\frac{ y-y _{1} }{ x-x _{1} }=\frac{ y _{2}-y _{1} }{ x _{2}-x _{1} }\]

Answer 5

so would that be a, b, c, or d? D:

Answer 6

@esamalaa ?? a b c or d?

Answer 7

x | 0 | 1 | 2 | 3 | 4 | 5 |
y |-3 | -2 | -1 | 0 | 1 | 2 |

can you see a common difference between x and y?

Answer 8

@unklerhaukus i mean i guess top is positive bottom is negative im not sure to be honest

Answer 9

both x and y are increasing, right?

Answer 10

yes

Answer 11

when x increases by one each time, how much does y increase?

Answer 12

by -1

Answer 13

are you sure about that?

Answer 14

OHH i think i get it now they both are increasing by 1, so the awnser would be d y=x+1 ?

Answer 15

they are both increasing by the same amount (one) each time, but they start at different values

Answer 16

what is the difference between the starting values?

Answer 17

3 or -3

Answer 18

yeah -3

Answer 19

in fact the only difference between x and y is that y is three less than x , right?

Answer 20

yes

Answer 21

Which of the options corresponds with the statement

`y is three less than x`

a) y=x+3
b) y= -2x
c) y= x-3
d) y= x+1

Answer 22

ah i think i see so it would be c x-3 for three less than?

Answer 23

you can try that solution out

y= x-3 when x =0

y= 0-3
y= -3

which fits the first column on the table

x | 0 |
y |-3 |

Answer 24

what about the second column, for x=1

y= x-3
= 1-3
= ?

x | 0 | 1 |
y |-3 | ? |

does this equation work?

Answer 25

|1|
|-2|

i beleive so if you do -3-1=-2?

Answer 26

good,

lets lets one more point , just to be sure

what do you get if you sub
x=5
into

y=x-3

Answer 27

*lets test

Answer 28

|5|
|2|

-3-5=2

Answer 29

thanks so much man!

Answer 30

careful

* x=5
into
y = x -3
y = 5 -3 = 2

Answer 31

so the answer would be C

Answer 32

yers