SOLUTION: Can someone graph the following problem for me. f(x) = -3x -2 I am really lost in doing graphs. Thanks allot, Lyn

Algebra ->  Coordinate-system -> SOLUTION: Can someone graph the following problem for me. f(x) = -3x -2 I am really lost in doing graphs. Thanks allot, Lyn      Log On


   

Question 59497: Can someone graph the following problem for me.
f(x) = -3x -2
I am really lost in doing graphs.
Thanks allot,
Lyn
Answer by funmath(2933) About Me  (Show Source):
You can put this solution on YOUR website!
Hi Lyn,

f(x) = -3x-2
Notice that this is a linear function. It is graphed the same way you would graph: y=-3x-2. f(x) and y mean the same thing, it's just a different notation.
:
Let x=0
f(0)=-3(0)-2
f(0)=0-2
f(0)=-2 Plot (0,-2)
:
Let x=2 (you can pick anything for x by the way, why don't you pick a couple of other numbers, and you'l find that they fall on the line as well)
f(2)=-3(2)-2
f(2)=-6-2
f(2)=-8 Plot (2,-8)
With linear functions, you only need two points to make a graph unless otherwise specified. Connect the points and you have this line.
graph%28300%2C200%2C-10%2C10%2C-10%2C10%2C-3x-2%29
Happy Calculating, Lyn!!!