Question

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

Answer 1

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