Help with graphing

[Guest]

How do you graph y= x-3 problems like this????

 

[stapel]

1) Pick an x-value.
2) Plug it into the equation.
3) Simplify to find the corresponding y-value.
4) Draw the (x, y) dot.
5) Lather. Rinse. Repeat (steps 1 through 4). :wink:
6) Put a ruler against the row of dots.
7) Draw the line.

Eliz.

 

[Guest]

graphing

i still dont understand how to do this...

 

[sco11]

if x = 3, then y = 0


x | y
3 | 0
2 | -1
1 | -2


You see?

 

[stapel]

Re: graphing

i still dont understand how to do this...

At which step (1 through 7) are you stuck?

Eliz.

 

[Guest]

graphing

on step one

 

[stapel]

Pick a number. Any number.

Eliz.

 

[Guest]

graphing

okay so i pick 2 now what?

 

[Guest]

Plce the value of x=2 into the equation you have....

y= x-3
y=(2)-3
y= -1


and you now have a point to plot (2, -1)

 

[Guest]

okay now do i do that again? or do i have to find another point..

 

[stapel]

"Doing it again" is "finding another point". And, yes, you need more than one point in order to draw the line.

Eliz.

 

[Guest]

Thank you i understand it now.