SOLUTION: I need to know the domain, range, min or max to these problems y=-x^2+6x+5 y=1/2(x-6)^2+7 y=-3(x+2)^2+1 Y=4x^2-8x

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Question 372385: I need to know the domain, range, min or max to these problems
y=-x^2+6x+5
y=1/2(x-6)^2+7
y=-3(x+2)^2+1
Y=4x^2-8x
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
y=-x%5E2%2B6x%2B5+=+-%28x-9%29%5E2%2B14. The domain is the set of all real numbers. The range is (-infinity, 14].
y=%281%2F2%29%28x-6%29%5E2%2B7. The domain is the set of all real numbers, the range is [7, infinity).
y=-3%28x%2B2%29%5E2%2B1. Domain is all real numbers, range is (-infinity, 1].
Y=4x%5E2-8x+=+4%28x%5E2-2x%2B1%29+-+4+=+4%28x-1%29%5E2+-+4. Domain is all real numbers. Range is [-4, infinity).