Question

I Do Not Get It:

Reya and Ian are both concerned about class size. Reya stated that she would like to attend a small school with fewer than 1,000 students in her freshman class, while Ian stated that he would like to attend a larger school. Look at the table below:

Answer 1

This is the question: a) Using g(x), d(x) and h(x), write a function to represent the class size data for each school.

Answer 2

This is what I put:
I am going to use g(x) for Gore College, d(x) for Douglas University, and h(x) for Hughes University.

Gore College: g(x) = 45x + 720

How did I find out the slope? I basically subtracted all the numbers given. I subtracted 720 by 675 and got 45, and to check I subtracted 675 by 630 and got 45 again. So I know that the slope is positive and it is 45.

Douglas University d(x) = 60x + 750

How did I find out the slope? I did the same thing I did for Gore College.

Hughes University: h(x) = 80x + 760

How did I find out the slope? I did the same thing I did for Gore College and Douglas University.

Answer 3

Am I right?

Answer 4

@agent0smith @ganeshie8 @mathstudent55 @campbell_st @nincompoop

Answer 5

Did I get it right?

Answer 6

is that a typo there ?
it shud be 600 right ?

Answer 7

cuz,

680 - 630 = 50
slope is not matching.

Answer 8

Now, it is all 630.

Answer 9

OMG, I see it too. It is not a correct slope. I didnt check.

Answer 10

It is 600. Oh, my god, I got scared.

Answer 11

cool :) then all ur equations are correct !

Answer 12

Oh, okay, and since years is the x-intercept, 2 years ago would be -2, and a year ago would be -1, because that is what I am unsure about @ganeshie8

Answer 13

yup !
time starts NOW (x=0)

Answer 14

Oh, okay. Good. Phew!

Answer 15

x = 1, means, 1 year from now.
x = -1, means 1 year previous from now

Answer 16

yeah time can be negative, relatively.. (with reference to NOW)

Answer 17

Okay, thanks.

Answer 18

np :)