When you have two points of a line, you can connect the dots.
If you are talking about the things in the perentheses, (5,-9), they are called ordered pairs. Ordered pairs help you find a location on a coordinate graph.
Each ordered pair is made up of two numbers. A linear graph has an infinite number of pairs. An easy way to see this is look at the line y=x. This is a linear graph and any two of the same numbers will work! So there are an infinite number of ordered pairs.
Infinitely many. Each and every point on the graph gives rise to an ordered pair.
graph the ordered pairs (4, -2) AND (1, -1) AND CONNECT TO FORM A line. Which quadrant contains no point for this linear function? Explain your answer