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3 years ago

Which of the graphs below represents the equation 4x + y = 7? Graph A Graph B Graph C Graph D

Mathematics

1 answer:

Andrei [34K]3 years ago

8 0

For this case we have the following equation:
$4x + y = 7
$
Rewriting the equation in its standard form we have:
$y = - 4x + 7
$
We observe that we have a linear function.
Where,
Negative slope and equal to 4.
Intersection with the axis and equal to 7.
Answer:
To observe the correct graph, please:
See attached image

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Answer:

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3 years ago

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yan [13]

Answer:

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Step-by-step explanation:

Let

x ----> the number of minutes used

y ----> is the total cost

step 1

Find the slope of the linear equation

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

we have the ordered pairs

(100,54) and (660, 138)

substitute

$m=\frac{138-54}{660-100}$

$m=\frac{84}{560}=\$0.15\ per\ minute$

step 2

Find the equation of the line in point slope form

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we have

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substitute

$y-54=0.15(x-100)$

step 3

Convert to slope intercept form

Isolate the variable y

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3 years ago

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