Question

Help me please

Answer 1

@phi

Answer 2

How would i figure this out?

Answer 3

no, wait. I think they are being tricky.

Answer 4

so what would i do step by step

Answer 5

First step is what is the y-intercept ?

Answer 6

what is the y value when x=0 ? put your finger on the y-axis and move up until you reach the line. what number do you see?

Answer 7

40
?

Answer 8

yes

Answer 9

oh ok now what

Answer 10

next, we find the slope. However, here is the tricky part
below the graph they say "units sold (in hundreds)"
that means when it says x=2 (for example) that really means 200

Answer 11

to find the slope, write down the first point you know (0,40) (that is the y-intercept point)
can you find another point on the line ?

Answer 12

Ok so what would i do

Answer 13

can you find another point on the line ?

Answer 14

where do i go from

Answer 15

the x2?

Answer 16

look at the red line. look for where it goes through a vertical and a horizontal line (corner of a box). the read off the x value (go down the line until you reach the x-axis and read that number... and multiply by 100). then go back to the line and go sideways to the left until you reach the y-axis and read off the number.

can you do that ?

Answer 17

just never mind thanks for the help the timer timed out. :( thanks for the help though?

Answer 18

if they ask a similar question, you are closer to the answer if you finish this one.

Answer 19

I will finnish this one but is there any like shortcut? easier way

Answer 20

It's rise/run

http://prntscr.com/35w21j

Answer 21

@aprilann143 What is the rise?

Answer 22

how would i find this

Answer 23

if you were desperate, you can get down to a 50/50 chance by picking one of the choices that has the correct y-intercept.

Answer 24

Clearly it's decreasing, so it's rise is going to be negative. The run is positive though :p

So in yours, it's rise is -1 because it goes down 1 for every x value, and runs 2 spaces to the right (positive)

Answer 25

but if you did a lot of these problems you would get very fast at them...

Answer 26

but to be faster, you should practice reading off a point on the line. That takes "looking" which does not take too long...once you know how to do it.

Answer 27

There's a shortcut to it, look at the y intercept it's (0,40) or 40

in y = mx + b, m is the slope

know you have the y intercept just find the slope by looking at the rise/run

it's going down 1 and running 2 .____. if you don't get it after this then you should review your lesson >.>

Rise / run = -(\(\ \dfrac{1}{2} \) )

y = \(\ -\dfrac{1}{2}\) + 40

Answer 28

Here is one point

Answer 29

you should get (200, 36)
with your other point (0,40)
do change in y : (40-36)
divide by change in x (0-200)
you get \[ \frac{40-36}{0-200}= \frac{4}{-200}= - \frac{1}{50} \]

Answer 30

(0,40) (8,24)

24-40/8-0 = -16/8 = -2

(0,40) (4,32)

32 - 40 / 4 - 0 = -8/4 = -2

I looked at it from just the rise / run but using the slope formula i get -2 ._.

Answer 31

X_X This is in hundreds... nvm *facepalm*