Question

A polynomial function can be written as (x - 1)(x - 4)(x + 7). What are the x-intercepts of the graph of this function?

(1, 0), (4, 0), (7, 0)
(-1, 0), (-4, 0), (-7, 0)
(1, 0), (4, 0), (-7, 0)
(-1, 0), (-4, 0), (7, 0)

Answer 1

I think its D. :p

Answer 2

Find the zeros x - 1 = 0 x - 4 = 0x + 7 = 0

Answer 3

sorry that got mixed up

Answer 4

x - 1= 0

x - 4 = 0

x + 7 = 0

Answer 5

for example, the first one is x - 1 = 0 then do inverse operations, x + 1 = 0 + 1

So one of the x-intercepts are (1, 0)

Answer 6

If you do it that way for the others you should actually get C as your answer

Answer 7

Ah, so they weren't negative. Thank you! ^-^