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marin [14]
3 years ago
8

Help please n ty :P sdhgfahedgewkgfzndb

Mathematics
1 answer:
Ugo [173]3 years ago
3 0

Answer:

y=-3.2\\\\y=-2.2\\\\y=-1.8

Step-by-step explanation:

Insert the given x values for the given equation to find the corresponding y coordinate:

y=0.2x-2

x:-6,-1,1

Insert -6:

y=0.2(-6)-2

Simplify multiplication (when multiplying a negative and a positive, the result will always be negative):

y=-1.2-2

Simplify (when subtracting from a negative number, add the values, but keep the negative symbol):

y=-3.2

Insert -1:

y=0.2(-1)-2\\\\y=-0.2-2\\\\y=-2.2

Insert 1:

y=0.2(1)-2\\\\y=0.2-2\\\\y=-1.8

:Done

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Answer:

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2 years ago
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9. What is the solution to<br> 4x - y = 8,<br> 6x + y = 2
valentina_108 [34]

Answer:

x = 1

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Step-by-step explanation:

You can use 2 methods to solve this, substitution or elimination.

Elimination:

You want to try and get rid of one variable in the pair of equations.

We add them together since y and -y cancel each other out when added.

Now, we have a much simpler equation.

   4x - y = 8

+  6x + y = 2

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Now, you can just plug it back in to one of the equations to get y.

(4 x 1) - y = 8

4 - y = 8

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Substitution:

You can also try and change the equation so that there is only one variable by setting the other equation equal to a variable.

This one is easier to do:

6x + y = 2

y = -6x + 2

Now, plug it into the first equation replacing y, since they are equal, and solve:

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10x = 10

x = 1

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6x + y = 2

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:)

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