SOLUTION: 1) f(x)= sqrt of 5-x Determine the domain and graph I converted it to f(x)= sqrt -x+5 I have a domain of (-00,5] so I graphed it 5 on the x to -00 teacher stated it was

Algebra ->  Functions -> SOLUTION: 1) f(x)= sqrt of 5-x Determine the domain and graph I converted it to f(x)= sqrt -x+5 I have a domain of (-00,5] so I graphed it 5 on the x to -00 teacher stated it was       Log On


   

Question 465821: 1) f(x)= sqrt of 5-x Determine the domain and graph
I converted it to f(x)= sqrt -x+5 I have a domain of (-00,5] so I graphed it 5 on the x to -00 teacher stated it was wrong but did not state what was wrong.
2) f(x)= -2/x^+2x-3 determine the domain and graph I had a domain of (-00,-3)U(-3,00) he says that was wrong I graphed it correctly he said
Thanks for your assistance
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
1) f(x)= sqrt(5-x) Determine the domain and graph.
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5-x must be >= 0
x <= 5
Domain: (-oo,5]
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Graph:
graph%28+400%2C300%2C-10%2C10%2C-10%2C10%2C%285-x%29%5E%281%2F2%29%29
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2) f(x)= -2/(x^2+2x-3) determine the domain and graph
Factor where you can:
f(x) = -2/[(x+3)(x-1)]
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Domain: All Real Numbers except x = -3 and x = 1
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Graph:
graph%28400%2C300%2C-10%2C10%2C-10%2C10%2C-2%2F%28x%5E2%2B2x-3%29%29
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Cheers,
Stan H.