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2. (06.03)

What is the solution to the following system of equations? (2 points)
y = -x2 – 5x − 4
y = -x² + 9x - 18
O (-1,-10)
O (1,-10)
O (-1,10)
(1.10)

User Onegray
by
7.8k points

1 Answer

3 votes

Answer: (1, -10)

Explanation:

Since both of the equations are set equal to y, we can conclude that:


-x^2 -5x-4=-x^2 + 9x-18\\\\-5x-4=9x-18\\ \\ -14x-4=-18\\\\-14x=-14\\\\x=1

If x=1, then
y=-(1)^(2)+9(1)-18=-10

Thus, the solution is (1, -10)

User Proudgeekdad
by
8.2k points

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