Question

Use the function f(x) to answer the questions: f(x) = 2x^2 − x − 10

Part A: What are the x-intercepts of the graph of f(x)? Show your work. (2 points)
Part B: Is the vertex of the graph of f(x) going to be a maximum or a minimum? What are the coordinates of the vertex? Justify your answers and show your work. (3 points)
Part C: What are the steps you would use to graph f(x)? Justify that you can use the answers obtained in Part A and Part B to draw the graph. (5 points)

Answer 1

In part B,C the coordinates are
(1/4,f(1/4)) = (1/4,-81/8)