How do you graph y=x−4 by plotting points?

1 Answer
qin
Apr 22, 2017

Make a list of x values and their corresponding y values. Plot the (x,y) coordinates on the y against x axes. Join the dots and the straight-line graph is obtained.

Explanation:

For example:

When x=−2 , y=(−2)−4=−6 .
When x=0 , y=(0)−4=−4 .
When x=3 , y=(3)−4=−1 .
When x=4 , y=(4)−4=0 .
And so on...

By plotting the coordinates of (-2,-6), (0,-4), (3,-1), (4,0), etc. , the points obtained will form a straight line with an equation y=x−4.

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