The table below represents a function. which of the following equations could be its function rule? x y 0 -2 1 0 3 4 -2 -6

the function described in the table would be y = 2x - 2.

in order to find the equation, we need to start by picking two points to use. for ease, we'll use ones with 0's in them: (0, -2) and (1, 0).

next we'll find the slope. the slope formula is below.

m = (y2 - y1)/(x2 - x1)

in this equation, m is the slope and (x1, y1) is the first ordered pair and (x2, y2) is the second. so we put in the numbers and solve for m.

m = (y2 - y1)/(x2 - x1)

m = (0 - -2)/(1 - 0)

m = 2/1

m = 2

now that we have this, we can use slope intercept form and either of the points we just used to find the y-intercept.

y = mx + b

-2 = 2(0) + b

-2 = 0 + b

-2 = b

now we put this intercept and the slope in the formula and get our equation.

y = 2x - 2

answer:

payment just for service  

→

$

87.12

payment for service including tax

→

$

94.09

explanation:

service only with 20% tip  

→

$

72.6

(

1

+

20

100

)

=

$

87.12

in the opening of the question the word 'service' is associated only with the pretax value.

the closing part of the question asks: how much did she pay for the  

service

−−−−−−  

so technically the answer is  

→

$

72.6

(

1

+

20

100

)

=

$

87.12

however, the intention of the question provider may have been that your answer is to be  

$

87.12

(

1

+

8

100

)

=

$

94.09

to 2 decimal places.

'

payment just for service  

→

$

87.12

payment for service including tax

→

$

94.09

tony b

mar 21, 2017

answer:

trying to explain it another way

explanation:

service charge  

.

→

$

72.60

20% tip  

20

100

×

$

72.60

=

$

14.52

−−−−−−  

←

add

$

87.12

tax  

8

100

×

$

87.12

=

$

6.97

−−−−−  

←

add

$

94.09

related questions

kk.bj.

step-by-step explanation:

.mnm.kn.kj