Question

Which equation represents the graph of the linear function?

A.y=-1/3x+1

B.y=-3x-1

C.y=3x+1

D.y=-3x+1

Answer 1

http://static.k12.com/calms_media/media/1524500_1525000/1524542/1/b8ddac88ed9d72023cae1738c791d6bcf8835e51/MS_IMC_06_05_116069.jpg

Answer 2

@mathmate

Answer 3

Here you have to parameters. If you can match both parameters, you can find the equation.
y=mx+b
b=y-intercept, value of y when x=0. What is it?
@TwiztTiez

Answer 4

D? i think

Answer 5

Then the slope = m = \(\dfrac{\Delta y}{\Delta x}\)
Can you find the slope?

Answer 6

:o hm this may take a while

Answer 7

I would prefer you to concentrate on getting both parameters before making your choice.

Answer 8

Okay sorry

Answer 9

If you want to find the slope, you don't really have to use the calculator.
You can do that by counting squares.

Answer 10

On the graph right

Answer 11

Start from any point, find the y. Move one square to the right, see if it has increased (m>0) or decreased (m<0) and by how many squares, that your m.

Answer 12

Yes, from the graph!

Answer 13

So if i were to that i would see that it goes down -3 and over 1 right

Answer 14

Exactly, m=-3, b=+1, now you're free to make your choice!

Answer 15

So D?

Answer 16

Exactly! \(\color{blue}{\Large\checkmark}{Way~to~go!}\)

Answer 17

Yesh!

Answer 18

Yay!