3 years ago

What is the direct variation equation if f(x) varies directly with x and f(x)=−18 when x = 3?

1 answer:

kondor19780726 [428]3 years ago

8 0

Answer:

your answer is B becausewe can find k when given any point by dividing the y-coordinate by the x-coordinate. For example, if y varies directly as x, and y = 6 when x = 2, the constant of variation is k = - 3.

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Algebraic Woru

mafiozo [28]

The right answer is Option D.

Step-by-step explanation:

Let,

Kyle's money = x

Hayden's money = y

Jeremy's money = z

According to statements;

Kyle has three times as much money in his savings account as Hayden.

x = 3y Eqn 1

Hayden has twice as much money in his savings account as Jeremy.

z = 2y Eqn 2

Combined Kyle, Hayden, and Jeremy have a total of $612.

x+y+z=612 Eqn 3

Putting value of x and z from Eqn 1 and 2 in Eqn 3

$3y+y+2y=612\\6y=612$

Dividing both sides by 6

$\frac{6y}{6}=\frac{612}{6}\\y=102$

Putting in Eqn 1;

$x=3(102)\\x=306$

Kyle has $306 in his account.

The right answer is Option D.

Keywords: Linear equations, division

Learn more about linear equations at:

#LearnwithBrainly

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3 years ago

What is the quotient when (x + 3) is divided into the polynomial 2x2 + x - 15?

My name is Ann [436]

Using long division, we get

2x-5
x+3 | 2x^2+x-15
- (2x^2+6x)
_________
-5x-15
-(-5x-15)
________
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2x-5 is your answer

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4 years ago

an animal shelter has places kittens and 12 puppies available for adoption what is the ratio of puppies to kids

m_a_m_a [10]

12:0...

Don't forget to make me brainliest.

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3 years ago

17976 / 28 / means divide if you didn't know :)

GREYUIT [131]

Answer:

642 you divide the two numbers

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3 years ago

The point (5, -2) is rotated 90° about the origin. Its image is:

OLEGan [10]

If rotated around the origin clockwise the new point is found at (-2,-5)

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3 years ago