How do you graph #3x – y = 8# by plotting points?

1 Answer
BeeFree
Jan 8, 2016

This is a linear equation or a straight line , so you only need to plot two points , then draw a line with a ruler through those two points ...

Explanation:

First, solve for the variable y ...

#3x-y=8#

#y=3x-8#

Now, pick two values for x such as #0 and 1#

#y(0)=3(0)-8=-8#

#y(1)=3(1)-8=-5#

So, our two points are #(0,-8) and (1,-5)#

Finally, draw a straight line through the two points using graph paper ...

hope that helped

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