Question

Using graphing technology, approximate where the graph of y = 5x2 − 3x − 9 crosses the x-axis.

(1.55, 0) and (−1.15, 0)

(1.23, 0) and (−1.26, 0)

(1.32, 0) and (−1.01, 0)

(1.68, 0) and (−1.08, 0)

Answer 1

graph the function. If you have a TI calculator look up the instructions to find the zeros or x-intercepts.

Answer 2

ok

Answer 3

but how

Answer 4

Use wolfram alpha