Question

How do you graph this equation

Y=3x-2

Answer 1

its a straight line the easiest thing to do is create a table of values

pick 3 values for x, substitute them into the equation to find y

then you'll have 3 ordered pairs to plot.

Draw a line through all 3 points for the line

so try

x | 0 | 1 | 2 |
--------------------
y | | | 4 |



so using y = 3x - 2 and substituting x = 2 you get y = 3*2 - 2 = 4

so an ordered pair is (2, 4) you can plot this in the number plane.


the reason you choose 3 points is to eliminate mistakes, the line must go through all 3 points. otherwise you need to go and check the substitutions

hope it helps