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blsea [12.9K]
3 years ago
10

A direct variation function contains the points (2, 14) and (4, 28). Which equation represents the function?

Mathematics
2 answers:
IgorC [24]3 years ago
6 0
Direct variation mean x =ky so y = x/k

(2,14) mean y = kx so 14 = k*2 so 14 = 7*2 so 14 = 14 
(4,28) mean y = kx so 28 = k*4 so 28 = 7*4 so 28 = 28

from these result that the 3rd choice is right sure 


mash [69]3 years ago
6 0

y = 7x THIS IS THE ANSEWR

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The answer is 5:6:20 but can someone explain how plz?
Leya [2.2K]
The ratio of red to green is 5:6 which means that for every 5 red cars, there are 6 green cars

The ratio of green to blue is 3:10 telling us that for every 3 green cars, there are 10 blue cars. 

The ratio 3:10 is equivalent to 6:20 after we multiply both parts by 2. This now says that for every 6 green cars, there are 20 blue cars.

------------------------------

Let's say we had 5 red cars, 6 green cars and 20 blue cars
Based on that info, we know that the ratio of red to green is 5:6
And the ratio of green to blue is 6:20 which reduces to 3:10

We don't reduce 6:20 to 3:10 however, since that would change the green count from 6 to 3. We want to keep the green count at 6.

So because there are 5 red cars, 6 green cars, and 20 blue cars in this example, and this example points to the proper ratios mentioned earlier, this means that the final answer is 5:6:20. This ratio cannot be reduced or simplified as there are no common factors (other than 1) for 5, 6, and 20.
4 0
3 years ago
When a tree was planted, it was 3 ft tall. Since then, it has been growing at a rate of 0.25 ft per year. How long will it take
anzhelika [568]
I think it will be 60 years. 15 divided by 0.25 is 60.
6 0
4 years ago
Suppose M is the midpoint of FG. Find each missing measure. #39-47 odd​
Eva8 [605]

Answer:

is this geometry?

Step-by-step explanation:

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5 0
3 years ago
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ziro4ka [17]

Answer:

1

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Please help me solve this geometry problem:)
yarga [219]

Given:

The endpoints of a line segment are (-5,12) and (-5,0).

To find:

The coordinates of a points which divides the line segment in 2:1.

Solution:

Section formula: If a point divides a line segment in m:n.

Point=\left(\dfrac{mx_2+nx_1}{m+n},\dfrac{my_2+ny_1}{m+n}\right)

Let point P divides the given line segment in 2:1. They, by using section formula, we get

P=\left(\dfrac{2(-5)+1(-5)}{2+1},\dfrac{2(0)+1(12)}{2+1}\right)

P=\left(\dfrac{-10-5}{3},\dfrac{0+12}{3}\right)

P=\left(\dfrac{-15}{3},\dfrac{12}{3}\right)

P=\left(-5,4\right)

Therefore, the coordinate of the point that partitions the given segment in the ratio 2:1 are (-5,4).

8 0
3 years ago
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