3 years ago

Y is inversely proportional to x given that y=-50 when x=3 find y when x=10

Mathematics

1 answer:

sammy [17]3 years ago

4 0

Answer:advadfvzcs

Step-by-step explanccccdcsdadrfaration:

X12

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Answer:

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Step-by-step explanation:

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yan [13]

Answer:

The costs of the plan are $0.15 per minute and a monthly fee of $39

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

$m=0.15\\point\ (100,54)$

substitute

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step 3

Convert to slope intercept form

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therefore

The costs of the plan are $0.15 per minute and a monthly fee of $39

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Answer:

Step-by-step explanation:

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