... -+ - - - - - - 3517312 53312334xxxxsubtracted from both sidesboth sides divided by whichreverses the direction of the inequality)05(, Therefore, the solutions to -+ 3517x ... units above the x-axis, it is identified by the ordered pair (4, 1.5). The origin O has coordinates (0, 0). Unless otherwise noted, the units used on the x-axis and the y-axis are the same. ... system, often called the xy-coordinate system or xy-plane. The horizontal number line is called the x-axis, and the vertical number line is called the y-axis. The lines divide the plane into four...