PLEASE I NEED HELP QUICKLY!!! Find the solution for the given system of equations in the form (x,y).
2 answers:
Solution:
<u>Note that:</u>
- Given equations: -x + y = 8 and 7x + 3y = -16
<u>Solving the system of equations to find the value of x and y:</u>
7x + 3y = -16
7x + 3y = -16
<u>Substituting the value of y into any equation to find the value of x:</u>
- 7x + 3y = -16
- => 7x + 3(4) = -16
- => 7x + 12 = -16
- => 7x = -16 - 12
- => 7x = -28
- => x = -28/7 = -4
<u>Putting the values in the form (x,y):</u>
- (x,y) ⇒ (x = -4,y = 4) ⇒ (-4,4)
Correct option is D.
Answer:
Step-by-step explanation:
<u>Given system:</u>
<u>Multiply the first equation by 7 and add up the equations:</u>
- -7x + 7y + 7x + 3y = 7*8 - 16
- 10y = 40
- y = 4
<u>Find y:</u>
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Hope this helps! :)
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Answer:
8 : 28
x2 x2
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Step-by-step explanation:
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