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lys-0071 [83]
3 years ago
8

5x +7y =19, -5x - 3y = 11

Mathematics
1 answer:
vaieri [72.5K]3 years ago
4 0
Elimination

In other words,

5x+7y=19
-5x-3y=11

4y=8
y=2
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First, we are going to find the vertex of our quadratic. Remember that to find the vertex (h,k) of a quadratic equation of the form y=a x^{2} +bx+c, we use the vertex formula h= \frac{-b}{2a}, and then, we evaluate our equation at h to find k.

We now from our quadratic that a=2 and b=-32, so lets use our formula:
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