How do you graph y=x-7 by plotting points?
1 Answer
Sample two points from the equation and connect them
Explanation:
First of all, notice that you want to plot a line. In fact, your function is like
Now, to draw a line you only need two points. If you extend the segment connecting those two points, you have your line.
And finally, to sample points from an equation, you simply choose two arbitrary values for the independent variable
So, if we choose, for example,
So, the line passes through the point
Similarly, choose
So, the line passes through the point
Draw