All categories

3 years ago

Which equation represents a proportional relationship?

Mathematics

2 answers:

choli [55]3 years ago

7 0

Answer:

$y=15x$

$y=-x$

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $y/x=k$ or $y=kx$

In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin

case A) $y=15x$

Is a linear equation that passes through the origin

therefore

The case A) represent a proportional relationship

case B) $y=-x$

Is a linear equation that passes through the origin

therefore

The case B) represent a proportional relationship

case C) $y=-5(x+1)$

Is a linear equation but not passes through the origin

therefore

The case C) does not represent a proportional relationship

case D) $y=5x+1$

Is a linear equation but not passes through the origin

therefore

The case D) does not represent a proportional relationship

earnstyle [38]3 years ago

3 0

Non-proportional :
Y=mx+b
C AND D
Proportional :
Y=mx/ y=kx
A AND B
you said which equation not equations so I think you messed up somewhere when providing the question because with the provided answer choices, there are 2 proportional relationships!

You might be interested in

How do u answer this

Korolek [52]

There are 10 bird feeders in total. So if Bob builds 10 Jake builds 0. If Bob builds 9 then Jake builds 1. If Bob builds 8 then Jake builds 2 and so on.

3 0

3 years ago

Which of the following is true

Andrews [41]

Answer:

A, AA similarity

Step-by-step explanation:

the first similar angle is from the vertical angles and there are 2 more because the end sides are parallel and when they intersect with the same line it will make it have the same degree. It may look SAS but the figure may not be drawn to scale and there is no proof for it.

8 0

4 years ago

Explain how to decide which is a better value. 4 greeting cards for $10 and 6 greeting cards for $14.

xxMikexx [17]

Answer:

I dont know if this is supposed to be solved a certain way for a class, but as a bargain shopper, this is what I would do to figure out the best value.

Step-by-step explanation:

First divide $10 by 4: 10.00/4=2.5 or $2.50 per card

Then, divide $14 by 6: 14.00/6=2.3333333 so about $2.33 per card

Now, just look at the two answers and see which one is less.

If you buy 4 cards for $10, you will pay $2.50 for each card and if you buy 6 cards for $14, you will pay about $2.33 for each card. Therefore, the better value would be the 6 cards for $14.

6 0

3 years ago

Hey can u help me with this

Liula [17]

Answer:

24 cubes

Step-by-step explanation:

First, we need to find the volume of the prism. To do this, we multiply the length by the width by the height, so $1 \cdot 2 \cdot \frac {3}{2} = 3$ . Then, we need to find the volume of one small cube, which has a length, width, and height of $\frac {1}{2}$ , so $\frac {1}{2} \cdot \frac {1}{2} \cdot \frac {1}{2} = \frac {1}{8}$ . Then we divide the volume of the prism by the volume of a cube to find how many could fit, so $3 \div \frac {1}{8} = 24.$

8 0

3 years ago

The commission for selling a house is$11825, which is 5.5% of the selling price. What is the selling price of the house?

Rzqust [24]

In this case, the best method starts with finding one percent of the selling price. To do this, divide the commission ($11825) by 5.5. This gets you 1%, which is $2150. Next, multiply this number by 100, turning 1% into 100%. Your final answer is $215,000.

8 0

4 years ago