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3 years ago

Does the equation -x+4y=-2 represent a direct variation. if so what is the constant variation

Mathematics

1 answer:

Harrizon [31]3 years ago

5 0

Answer:

Yes it represents.

Variation tax = 0,25

Step-by-step explanation:

Direct variation is the name we gave to the rate of change of a first degree function.

A first degree generic function is:

y = f(x) = ax + b

Now observe the question's function:

- x + 4y = -2

4y = x - 2

y = 1/4x - 2/4

y = f(x) = 0,25x - 0,5

0,25 is our constant variation, because any number that x assume will be multiplied by 0,25.

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I added a picture of the question.

tekilochka [14]

Answer:

C) 2*18, 3*12, 4*9, 6*6

Step-by-step explanation:

When these number sets are multiplied, all of them equal 36, therefore C is your answer.

Hope this helped! :)

7 0

2 years ago

Which of the following describes the graph of a linear function?

Musya8 [376]

Its y-values increase at a nonconstant rate as its x-value increases

4 0

3 years ago

Read 2 more answers

Solve for x. Round to the nearest hundredth

PIT_PIT [208]

Given that the length of one leg is 6 and the angle is 40°

The hypotenuse is x.

We need to determine the value of x.

<u>Value of x:</u>

The value of x can be determined using the trigonometric ratio.

Thus, we have;

$cos \ \theta=\frac{adj}{hyp}$

Substituting the values, we get;

$cos \ 45^{\circ}=\frac{6}{x}$

Simplifying, we have;

$x=\frac{6}{cos \ 45^{\circ}}$

$x=\frac{6}{0.766}$

Dividing, we get;

$x\approx7.83$

Therefore, the value of x is 7.83(app.)

Hence, Option A is the correct answer.

3 0

3 years ago

Soulotion to equation if y is =15 when x=2 ,find y when x=8

skelet666 [1.2K]

Answer:

The value of y for x = 8 is 60 .

Step-by-step explanation:

Given expression as :

For x = 2 , y = 15

Let the equation be written with constant k'

So, y = k x

Or, k = $\dfrac{y}{x}$

∴ k = $\dfrac{15}{2}$

<u>Now, again </u>

For x = 8

equation can be written as

y = k x

Or, y = $\dfrac{15}{2}$ × 8

Or, y = $\frac{15\times 8}{2}$

∴ y = 15 × 4

I.e y = 60

Hence The value of y for x = 8 is 60 . Answer

5 0

3 years ago

Each month the fire department host a pancake feed. This month 75 people attended the pancake feed. This is 13 less than twice a

Kazeer [188]

75=2x-13
75+13=2x-13+13
88=2x
88÷2=2x÷2
44=x

7 0

3 years ago