Doh College Algebra & Tig for Eng & SciI (05ANelson-Fall 2017 us Homework: Secti

Question

Doh College Algebra & Tig for Eng & SciI (05ANelson-Fall 2017 us Homework: Section 3.2 Homework Score: 0 of 1 pt 3.2.25 Save HW Score: 35.56% 3 2 of 9 pts 1 Answer the questions about the following function f(x)=2x2-x-1 O A O B. No, because substituting -2 into the given equation does not result in (a) Is the point (-2,9) on the graph of 1? (b) If x 2, what is f(x)? What point is on the graph of ? (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-intercept(s) if any, of the graph of f (f) List the y-intercept, if there is one, of the graph of f ° C. O D. Yes, because substituting x = 9 into the given equation results in-2 No, because substituting 9 into the given equation does not result in 2. n Acti 's Le 7 remaining

Explanation / Answer

given f(x)=2x^2-x-1

put x= -2

f(x) = 2(-2)^2-(-2)-1

=8+2-1

=9

A.yes because substituting x=-2 into the given equation results 9

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