Answer:
x=16, y=-12. (16, -12).
Step-by-step explanation:
5x-16y=272
y=(64-7x)/4
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4y=64-7x
4y+7x=64
5x-16y=272
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4(4y+7x)=4(64)
5x-16y=272
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16y+28x=256
5x-16y=272
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33x=528
x=528/33
x=16
5(16)-16y=272
80-16y=272
16y=80-272
16y=-192
y=-192/16
y=-12
Answer: c
Step-by-step explanation:
Answer:
35, Hope I got right
Step-by-step explanation:
6×2+20+3
12+23
35
1. Arrange all the terms containing y on the left side and all other terms on the right hand side.
-y = -x^2 + 6x - 8
2. Complete the square on the right side of the equation.
(x-3)^2 - 1
3. Reorder the right side of the equation to match the vertex form of a parabola.
4. Use the vertex form, y = a(x - y)^2 + k, to determine the values of a, h, and k.
a = 1, h = 3, k = -1
5. Find the vertex (h, k).
(3, -1)
