How do you graph f(x)=3x - 2 by plotting points?

1 Answer
Mark D.
May 8, 2018

Do a table of values for x from -1 to 3 and work out corresponding y values.
Eg when x=3, y=3xx3-2=7=>(3,7)
when x=2, y=3xx2-2=4 =>(2,4)
when x=1, y=3xx1-2=1 =>(1,1)
when x=0, y=3xx0-2=-2 =>(0,-2)
when x=-1, y=3xx-1-2=-5 =>(-1,-5)
Now plot these coordinates and you will have your straight line.
As you get better at doing it you only need to do three points to get your line.

Related questions
See all questions in Graphs in the Coordinate Plane
Impact of this question
3967 views around the world
You can reuse this answer
Creative Commons License