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erastova [34]
3 years ago
15

Suppose y varies directly with x. Write a direct variation equation that relates x and y. Then find the value of y when x=12

Mathematics
1 answer:
kati45 [8]3 years ago
7 0
So x= 3, y= 7

3/7 = 12/21

Which number times 3 is equal 12
3(4) = 12
So 7(4) = 28

X= 12 , y= 28
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2 years ago
What is the y intercept
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-2

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7 0
3 years ago
An annoyed teacher asked her student to do the following: (1) Start with the number 12. Go to step (2). (2) Take the negative of
dedylja [7]

Answer:

Step-by-step explanation:

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8 0
3 years ago
A business uses straight-line depreciation to determine the value y of an automobile over a 5-year period. Suppose the original
Elena-2011 [213]

For this problem. it is found that:

a) The automobile has depreciated 75% in 5 years.

b) The value of the automobile was reduced by $10,500 in five years.

c) The linear function is: s(t) = 14,500 - 2,100t.

<h3>What is a linear function?</h3>

A linear function is modeled by:

y = ax + b

In which:

  • a is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.
  • b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.

From the problem, we have that:

a) The automobile has depreciated 75% in 5 years, as 4000/14500 = 0.25, and 100% - 25% = 75%.

b) The value of the automobile was reduced by $10,500 in five years, as 14500 - 4000 = $10,500.

For the linear function, we have that:

  • The initial value is b = 14500.
  • The slope is of a = -10500/5 = -2100.

Hence the linear function is: s(t) = 14,500 - 2,100t.

More can be learned about linear functions at brainly.com/question/24808124

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6 0
1 year ago
The formula is used to convert Celsius to Fahrenheit temperature.
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Answer:

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6 0
3 years ago
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