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Sergio [31]
3 years ago
10

Which of these graphs shows a relationship that is NOT proportional? (PLEASEEE HELP)

Mathematics
1 answer:
Lilit [14]3 years ago
8 0

Answer:

b

Step-by-step explanation:

it doesnt

run through the origin

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Which of the following is an equation of the line through (2,3) and (-1,-12)
ahrayia [7]

Answer:

y = 5x - 7

Step-by-step explanation:

Using the equation of a line with two points

y_2 - y_1 / x_2 - x_1 = y - y_1 / x - x_1

Giving two points

( -4 , 10)(16 , -2)

x_1 = -4

y_1 = 10

x_2 = 16

y_2 = -2

Using the above formula

y_2 - y_1 / x_2 - x_1 = y - y_1 / x - x_1

-12 - 3 / -1 - 2 = y - 3 / x - 2

-15/-3 = y - 3 /x - 2

Cross multiply

-15(x - 2) = -3(y - 3)

-15x + 30 = -3y + 9

-15x + 30 + 3y - 9 = 0

-15x +30 - 9 + 3y = 0

-15x + 21 + 3y = 0

3y = 15x - 21 ( following y = mx + C

Dividing through by 3 to find y

3y/3 = 15x -21 / 3

y = 15x - 21 / 3

We can still separate

y = 15x / 3 - 21/3

y = 5x - 7

Therefore, the equation of the line is

y = 5x - 7

6 0
3 years ago
What do you add to 4 7/8 to make 8
nekit [7.7K]

Answer:

3 1/8

Step-by-step explanation:

4+3=7

7/8+1/8= 1

7+1=8

6 0
3 years ago
Read 2 more answers
2 years ago, father age was nine times the son age but 3 years later it will be 5 times only. find the present ages of the fathe
Goshia [24]

Answer:

<u><em>The Father is currently 47 and the Son is 7</em></u>

Step-by-step explanation:

Let F and S be the present ages of Father and Son, respectively.

We are told that <u>(F-2) = 9(S-2)</u> [2 years ago, father age was nine times the son age]

We also learn that <u>(F+3) = 5(S+3)</u>  [3 years later it will be 5 times only]

Take the first expression and isolate one of the variables (S or F).  I'll isolate F:

(F-2) = 9(S-2)

F = 9S - 16

Now use this in the second expression:

(F+3) = 5(S+3)

((9S-16)+3) = 5(S+3)

9S-13 = 5S+15

4S = 28

S = 7

Since F = 9S-16,

F = 9*(7)-16

F = 47

<u><em>Father is 47 and Son is 7</em></u>

CHECK:

Was the father 9 times the age of his son 2 years ago?

Father would have been 45 and son 5.  Yes, 9*5 = 45

In 3 years will he be 5 times older than his son?  Yes, Father would be 50 and son would be 10.  5*(10) = 50

3 0
2 years ago
MaryBeth works from home as a graphic designer. Recently she raised her hourly rate by 6​% to cover increased costs. Her new hou
mojhsa [17]

Answer:

$21.59

Step-by-step explanation:

The original hourly rate was x.

She raised it 6%. The raise is 6% of x, or 0.06x.

The new rate is x + 0.06x or 1.06x.

The new rate is $22.89.

1.06x = 22.89

Divide both sides by 1.06.

x = 21.59

7 0
3 years ago
Hiiii pppplease help i’ll give brainliest
emmainna [20.7K]
I believe the answer is winter since seasons are reversed at the poles and it’s summer while the South faces the sun so reverse and it would be winter
3 0
3 years ago
Read 2 more answers
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