Question

Referring to the figure, use the graph to estimate the
roots of the equation: y = x2 - 2x - 8

Answer 1

and the figure is?

Answer 2

Figure please

Answer 3

oh not a parabola

Answer 4

without the graph I can factor and find the answer:
x^2 - 2x - 8
(x-4)(x+2)
x-4 = 0
x = 4
x+2 = 0
x = -2

Answer 5

roots: x = 4, x = -2

Answer 6

Can you explain the process to me please?

Answer 7

yes, from what the question is telling you to do: the roots are going to be the x-intercepts of the graph. therefore we just need to find the x-intercepts.

Answer 8

which on the graph are clearly -2 and 4, do you see that?

Answer 9

okay yes i see that

Answer 10

so those are the solutions or roots

Answer 11

Ohh okay thats so easy than thank you!!