Question

What type of function is this: f(x) = 2x^2 -7x+3
I think it is a polynomial and... quadratic..? (It could also be rational, linear, radical, exponential???)

Answer 1

U think right.

Answer 2

quadratic

Answer 3

it's defintiely a polynomial as well, though?

Answer 4

and not a rational? :P

Answer 5

i don't think its a rational!

Answer 6

Can you help me with the degree, term? Degree should be 2 and term.. is 3? for 3 terms?

Answer 7

definitely a polynomial. rational means you can make it into a fraction, which usually only applies to numbers, not variables

Answer 8

the degree yes its 2 (the degree of a polynomial is the highest degree for a term)

Answer 9

in english, the exponent = the degree? It has 3 terms right?

Answer 10

and is the leading coefficient the first or highest?

Answer 11

exponent=power

Answer 12

in english...lol , the highest

Answer 13

wait it would still be 2right? Because the 7x is negative?

Answer 14

come to facebook

Answer 15

it is a quadratic equation and a polynomial........... as its highest power is two

Answer 16

yes its 2

Answer 17

we cant call it exponential

Answer 18

what is it's constant term?

Answer 19

because it has a quadratic curve not an exponential one with asymptode

Answer 20

the constant term is the number which is 3

Answer 21

oh durrr :)

Answer 22

Hash you get a medal for reminding me what exponential graphs look like.

Answer 23

it's domain is all real right?

Answer 24

yeah all real

Answer 25

thank you :)

Answer 26

how do you use algebra to find the zeros again..?

Answer 27

let y = 0 right?

Answer 28

correct!

Answer 29

and solve for x

Answer 30

so basically, factor it?

Answer 31

if u want to find y , x=0 if u want to find x , y=0

Answer 32

I'm getting .5 and 3 for the 0s... great lol

Answer 33

wait, would i factor this like normal, using ( ) ( ) = 0?

Answer 34

or do I have to put this in the quadratic..

Answer 35

oh I guess it factors

Answer 36

yay. Thanks yo.

Answer 37

well for this one i guess no need for the quadratic , it will be ( x-3)(2x-1)

Answer 38

=0

Answer 39

indeed!

Answer 40

:)

Answer 41

wait
these 0s are x intercepts right!?

Answer 42

yes

Answer 43

and all 0s of these kind of functions have to be x intercepts right?

Answer 44

is u put the image or y=0 you get x inyercepts

Answer 45

yea i guess!! :)

Answer 46

okay, say you put this in your calculator... how could you evaluate f(-.25)...

Answer 47

you just hit trace and input -.25 and get the output (y) right?