# help been on holiday

• Jan 11th 2010, 10:41 AM
mitchnufc
help been on holiday
I'm doing math homework and have been away and just came back so missed a few lessons. I have homework to do and dont know how do do the following

Draw the graph y=3x -1
• Jan 11th 2010, 10:44 AM
e^(i*pi)
Quote:

Originally Posted by mitchnufc
I'm doing math homework and have been away and just came back so missed a few lessons. I have homework to do and dont know how do do the following

Draw the graph y=3x -1

1) Pick 3 points and plot their values - the resulting line will go through all of them and be the right line

f(x) = 3x-1

f(-1) = -4
f(0) = -1
f(1) = 2

2) Start with f(0) and find that [f(0) = -1]. From there go up 3 for every 1 to the right and down 3 for every one to the left
• Jan 11th 2010, 10:53 AM
mitchnufc
Thanks
Thanks for the quick reply I am still totally lost on these graphs for some reason when i normally get most things straight away.
• Jan 11th 2010, 11:16 AM
skeeter
Quote:

Originally Posted by mitchnufc
Thanks for the quick reply I am still totally lost on these graphs for some reason when i normally get most things straight away.

go to the link and make up the lessons you missed.

http://www.purplemath.com/modules/graphlin.htm