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

@nincompoop

Answer 2

okay, use it
https://www.wolframalpha.com/input/?i=y+%3D+5x2+%E2%88%92+3x+%E2%88%92+9

Answer 3

Why "a"?

Answer 4

Yes I Swear it is a

Answer 5

Being honest, I haven't done math...or school...for a while.

Answer 6

@nincompoop

Answer 7

https://www.wolframalpha.com/share/clip?f=d41d8cd98f00b204e9800998ecf8427eemt1fhpf91

Answer 8

we're doing an approximation, so it doesn't need to be precise

Answer 9

well atleast close so i get the right answer

Answer 10

I didn't see your answer…

Answer 11

the answer isn't A

Answer 12

you have to count each step… your measurement is counted in hundredths

Answer 13

is it D @nincompoop

Answer 14

?

Answer 15

are you asking me or you were telling me? LOL because you need to have a little confidence in yourself :P

Answer 16

graphing technology translates to "using a graphing calculator"?
or does desmos work?

Answer 17

i think its D ( confidence) now i need your approval lol

Answer 18

you're right

Answer 19

yaaay :) lol