All categories

3 years ago

Which equation represents a proportional relationship that has a constant of proportionality equal to 2?

Mathematics

2 answers:

ss7ja [257]3 years ago

8 0

Answer:

$y=2x$

Step-by-step explanation:

We are given that

The proportion constant=k=2

We know that

Direct proportion: When one quantity increases then other quantity is also increase.When one quantity decreases then other quantity is also decrease.

Mathematical representation:Let one quantity= x and second quantity=y

$y\propto x$

$y=kx$

Where k= Proportionality constant

Substitute the value of k

$y=2x$

This is required equation which shows proportional relationship.

Softa [21]3 years ago

5 0

you didn't give the options but constant of proportionality is a number you have to multiply x by to get y.

y=kx is the equation that expresses the proportionality of x and y

the constant of proportionality is k, so k=2

y= kx becomes y=2x

so y = 2x should be the answer

You might be interested in

Noah gathered data at his school among 7th and 8th graders to see if there was an association between grade level and handedness

mash [69]

Answer: 4) 157

Step-by-step explanation:

We know that there is no association between the grade level and the andedness, then we should find that the ratio between left handeds and right handed is the same for both grades.

In 7-th grade we have:

Left handed : 11

Right handed: 72

The ratio is 11/72 = 0.14

Then, the ratio for the 8-th graders must be about the same:

Left handed: 24

Right handed: X

Ratio: 24/X

Let's start with the bigger option, X = 157.

24/157 = 0.15

Ok, we now see that with the bigger option we obtained almost the same ratio (if we use the smaller values for X, we will get a ratio bigger than 0.15, so 0.15 is the better aproximation that we can find to the 0.14 of the 7-th graders)

Then the correct option is 4) 157

4 0

3 years ago

Let the function f be continuous and differentiable for all x. Suppose you are given that f(−1)=−3, and that f'(x) for all value

Monica [59]

Answer:

Step-by-step explanation:

By MVT,

$f'(c) = \frac{f(5)-f(-1)}{5-1}$