Question

Which graph represents the function of f(x) = the quantity of 4 x squared minus 4 x minus 8, all over 2 x plus 65?

Answer 1

@jdoe0001

Answer 2

where the graph

Answer 3

i meant using graphing technology, and then tell where the point of discontinuity is on the graph

Answer 4

or \(\bf \cfrac{4x^2-4x-8}{2x+2}\implies \cfrac{4(x^2-x-2)}{2(x+1)}\implies \cfrac{4\cancel{(x+1)}(x-2)}{2\cancel{(x+1)}}
\)

Answer 5

yes so it would be 2(x-2)

Answer 6

yeap, that's the line 2(x-2)

http://fooplot.com/#W3sidHlwZSI6MCwiZXEiOiIyKHgtMikiLCJjb2xvciI6IiMyNjM3RUQifSx7InR5cGUiOjEwMDAsIndpbmRvdyI6WyItOC4yMTg3NDk5OTk5OTk5OTYiLCI4LjAzMTI0OTk5OTk5OTk5NiIsIi0zLjkzNzQ5OTk5OTk5OTk5ODIiLCI2LjA2MjQ5OTk5OTk5OTk5OCJdfV0-

Answer 7

btw, you can zoom in/out on those graphs, by using the middle-mouse button

Answer 8

would the point go on (-1,-6) or (1,-2)??

Answer 9

yes

Answer 10

graph of 2 x minus 4, with discontinuity at negative 1, negative 6
OR
graph of 2 x minus 4, with discontinuity at 1, negative 2

Answer 11

well... hold the mayo... notice, if x = -1
the denominator turns 0

Answer 12

Confused

Answer 13

\(\bf \cfrac{4x^2-4x-8}{2x+2}\qquad {\color{brown}{ x=-1}}\implies \cfrac{4x^2-4x-8}{2({\color{brown}{ -1}})+2}\implies \cfrac{4x^2-4x-8}{0}\)

Answer 14

so -1,-6 is not a point on the line

Answer 15

okay thanks :)

Answer 16

yw

Answer 17

If I ever have another question, I'll make sure to tag you :) Bye!!

Answer 18

:)