What is the equation of this graphed line? enter your answer in slope-intercept form in the box.

The slope-intercept form:

m - slope

b - y-intercept

The formula of a slope:

We have the points (2, 6) and (-4, -6). Substitute:

Therefore we have the equation

Put the coordinates of the point (2, 6) to the equation:

       subtract 4 from both sides

y = 2x+2

Step-by-step explanation:

We have two points so we can find the slope

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

   = (6--6)/ (2--4)

   = (6+6)/(2+4)

  =12/6

  =2

We can use point slope form to make an equation of a line

y-y1 = m(x-x1)

y--6 = 2(x--4)

y+6 =2(x+4)

Distribute

y+6 = 2x+8

Subtract 6 from each side

y+6-6 = 2x+8-6

y = 2x+2

This is in slope intercept form

y= mx+b

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

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