Soap using elimination what is negative 2x minus 4y equals 22 and 10 x plus 4y equals 18

Step-by-step explanation:

Given equations:

A.

B.

Using elimination to solve the given system.

We will add equation A and equation B in order to eliminate

Adding equation A to equation B.

+

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

Dividing both sides by 8.

(Answer)

Plugging in value of in equation B to evaluate .

Subtracting both sides by 50

Dividing both sides by 4.

∴ (Answer)

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step-by-step explanation:

let's cover over the formula of the vertex:

y = a(x – h)^2 + k

in this formula, (h,k) are the vertex, always remember that the positive or negative value of the vertex is based on the sign it has.

for example, if the vertex is -3,-6 then both the x and y value would have the positive sign attached to it and if it were a positive x and y value, then a negative sign would be attached to it.

with that being said, for our problem the x value is a positive one so we are looking for a number with a negative sign next to it, in this case the first and second choice.

however, for the first answer choice it isn't quite part of the formula so we know that the answer choice correctly displays the x value.

to confirm, we can see if the -1 fits correctly with the second answer choice, and as mentioned above a negative number will have a positive sign attached to it. so, for our problem we can see that -1 has been changed to +1, so we can confirm that the second answer choice is correct.

hence, our final answer is y=(x - 1)^2 + 1