Question 35525: Please explain how to sketch a graph of the following equation by finding 3 ordered pairs: x-y=4
Please show steps used so I am able to follow along. Thanks a million!
Answer by rapaljer(4671)   (Show Source):
You can put this solution on YOUR website! Choose three different values of x, and for each value of x, find the y value that makes the equation  true. You can use ANY values of x that you choose, but pick values of x that will make it easy for you to find y.
If you let x = 0, then you will have 0-y = 4, so y = -4.
If you let x = 4, then you will have 4-y=4, so y =0.
If you let x = 5, then you will have 5-y=4, so y = 1.
Remember, you can pick ANY values of x that you want to pick. Remember that when you graph points, there is an x-coordinate and a y-coordinate, and we always put the x number first and the y number second. Also, we ALWAYS graph the x value right or left, and the y number up and down on the graph.
Graph the pairs of numbers. The points we are graphing will be (0,-4), (4,0), and (5,1). Graph these three points on a graph, and it should look like this:
If you need more help with graphing, see some of my lesson plans in algebra.com.
R^2 at SCC
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