Question

f(y) = y + y^2 - 3

Match each value of y with the corresponding value of the function.

(Document enclosed below)

Answer 1

I'll do the odds and you do the evens. I'll work through #1 as a demo problem and post. Okay?

Answer 2

Yess =D Please

Answer 3

I'll post my answers for the evens to check if I am right :o

Answer 4

f(y) = y + y^2 - 3

f(2) = (2) + (2)^2 -3

f(2) = 2 + 2*2 -3

f(2) = 2 + 4 - 3

f(2) = 3

Answer 5

When you see f(y) and then a string of symbols after the = symbol, here's what it means (in this case)

f(y) = y + y^2 - 3

f of y take the number y and does things to it.

f(y) = ( ) + ( )^2 -3

In this case, f take whoever is playing the role of y, adds that "person" to the square of the person and then subtracts 3.

That sounds juvenile but it's the way I think about it. ANd, I always make place-holders for what is adjacent to the f, in this case 2.

Answer 6

Ohh I see so i'm just pluging in the numbers ?

Answer 7

Correct. Sometimes it will be variables but not now.

Answer 8

f(-4) = ( ) + ( )^2 -3


This the setup for your #2. Take it away.

Answer 9

f(-4) = (-4) + (-4)^2 -3

=9 ?

Answer 10

-4 + 16 - 3 = 9. Yes.

Answer 11

You have #4 now. It would be good if you showed the steps.

Answer 12

f(0 ) = ( 0 ) + ( 0 )^2 - 3
f(0) = 0 + 0*0 -3
f(0) = 0 + 0 - 3
f(0) = -3

Answer 13

I did them all :D

Answer 14

& You did f(2) o.o

Answer 15

Why are the answers on the question page?

Answer 16

Idk its from my online course

Answer 17

Look what I did. I substituted the problem number for the value of x.

Answer 18

Thats cool o.o

Answer 19

f(4 ) = ( 4 ) + ( 4 )^2 - 3
f(4) = 4 +4*4 - 3
f(4) = 4 + 16 - 3
f(4) = 17

Answer 20

I did them all right =DD !

since the ones u corrected o.o

Answer 21

Great. You just need to practice. So do I.

Answer 22

=) Thank you