Mathematical+Reflections,+p+82

since coordinates depend on where a point falls on x and y axis you can easily tell which quadrant a point will fall by looking at the coordinates. Two possible positive coordinates will be in quadrant 1; if x is positive y is negative the point will be quadrant 4; yx is negative and y is positive the point is in quadrant 2 and if both are the point will be in quadrants 3.
 * //How can you tell which quadrant a point will fall in by looking at its coordinates?//**

//**You have looked at several problems situations in which you figured out how to make a table of data. You also learned that if you can write an equation to describe how the variables are related, you can use a graphing calculator to graph the equation. How do you figure out what part of the entire graph actually make sense in the real problem situation? Use an example to help explain.**// mathmaticaly this graph is correct but in the real world you cant go back in negative time or negative age
 * AGE || 50 Meter Swim ||
 * 5 || 65 ||
 * 7 || 55 ||
 * 9 || 45 ||
 * 11 || 37 ||
 * 13 || 32 ||