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ZanzabumX [31]
3 years ago
6

3x – 4y> -6 2x + y<7 y>-3

Mathematics
1 answer:
Sloan [31]3 years ago
8 0

For the 1st problem, solve the 2nd equation for x.

 

x = -1 - y

 

Now, replace x in the 1st equation with (-1 - y)

 

2(-1 - y) - 3y = 2

-2 - 2y - 3y = 2

-2 - 5y = 2

-5y = 4

y = -4/5

 

x = -1 - (-4/5) = -1 + (4/5) = -1/5

 

The solution is (-1/5, -4/5)

 

For the 2nd problem, multiply the top equation by 15 and the bottom equation by -12. That gives us:

 

10x - 12y = 15

-36x +12y = 84

Add the two together, which gives us:

 

-26x = 99

x = -99/26

 

Now, put this value of x into either equation to solve for y

 

3(-99/26) - y = -7

-297/26 - y = -7

-y = -7 + 297/26

-y = 115/26

y = -115/26

 

The solution to this system is (-99/26, -115/26)

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Answer:

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Step-by-step explanation:

In an experiment, the independent variable is the one whose value, form or outcome is not determined by any other variable in the experiment.

The dependent variable is the one whose value, form or outcome is determined by one or more other variable(s) in the experiment.

This experiment tests the abilities of students with similar intellectual abilities to recall the meaning of a symbol in a textbook one week after the start of the experiment.

This ability was made to depend on whether there was noise or no noise outside their classrooms.

Since, this variable to be measured is determined by another variable in the experiment, it is evident that this is the dependent variable for this experiment.

Hope this Helps!!!

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