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Mathematics 80 Online
OpenStudy (anonymous):

Answer the questions about the given function. 25) f(x) =2x^2-x-1 (a) Is the point (-1,2) on the graph of f? (b) If x= -2, what is f(x)? What point(s) are on the graph of f? (c) If f(x)= -1, what is x? What point(s) are on the graph of f? (d) What is the domain of f? (e) List the x-intercepts,if any, of the graphs of f. (f) List the y-intercept, there is one, of the graph of f.

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