1. Quadrant II (x 0) Quadrant I (x > 0, y>0) ( -5, 3) x-axis Origin ( 0,0 ) Quadrant IV (x>0, y<0) ORDERED PAIR: The first number in the ordered pair is the x- coordinate (aka abscissa) and the second number in the ordered pair is the y-coordinate (aka ordinate). Quadrant III (x<0, y<0) y-axis RECTANGULAR COORDINATE SYSTEM -5 -4 -3 -2 -1 1 2 3 4 5 5 4 3 2 1 -2 -3 -4 -5 (, ) In what Quadrant is the point (-2,-5)? What is the x-value of any point on the y-axis? What is the y-value of any point on the x-axis? A point with a negative x-coordinate is on the ____ side of the y-axis. A point with a negative y-coordinate is on the _____ side of the x-axis. How many units away from the x-axis is the point (0,-4)? _________ (, )

6. The x-intercept of a linear equation is the point on the line that crosses the x-axis. At this point y=0. The x-intercept will be an ordered pair (__, 0) The y-intercept of a linear equation is the point on the line that crosses the y-axis. At this point x=0. The y-intercept will be an ordered pair (0,__) For example, find the x-intercept and y-intercept of the equation 3x + 4y = 12 The x-intercept is found by setting y=0 and solving for x. 3x + 4(0) = 12 3x = 12 x = 4 The x-intercept is (4,0) The y-intercept if found by setting x=0 and solving for y. 3(0) + 4y = 12 4y = 12 y=3 The y-intercept is (0,3) This linear equation can easily be graphed because we now have two points on the line.