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ollegr [7]
3 years ago
14

I need help on number 3

Mathematics
1 answer:
melisa1 [442]3 years ago
3 0
3 by 21 because 1/4 of 12 is is 3
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y < - 12

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Help please!!!
Maslowich

y varies directly with x.

The constant of variation is k = 7

Step-by-step explanation:

We have to check whether both vary directly with each other or not.

Every pair of x and y will be considered one by one

If y varies directly with x, it should satisfy y = kx or k = yx

So,

For x= -2, y=-14

-14 = -2k\\k = \frac{-14}{-2}\\k = 7

For

x=3, y=21

21 = 3k\\ k = \frac{21}{3}\\k = 7

For

x=5, y=35

35 = 5k\\ k = \frac{35}{5}\\k = 7

As k is same for all pairs of x and y, it can be concluded that:

y varies directly with x.

The constant of variation is k = 7

Keywords: Proportion, variation

Learn more about proportion at:

  • brainly.com/question/10703930
  • brainly.com/question/10772025

#LearnwithBrainly

6 0
3 years ago
what value of b will cause the system to have an infinite number of solutions? y = 6x – b –3x y = –3 b = a:2 b:4 c:6 d:8
bixtya [17]
In order to have an infinite number of solutions, it should be that the two equations are identical. Therefore, I believe the correct answer is option c. The value of b should be 6. Hope this answers the question.
4 0
3 years ago
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