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## Reviews of : College Algebra by Carl Stitz PDF Book

Inside this Book – The horizontal number line is usually called the x-axis while the vertical number line is usually called the y-axis. 6 As with the usual number line, we imagine these axes extending off indefinitely in both directions. 7 Having two number lines allows us to locate the positions of points off of the number lines as well as points on the lines themselves. For example, consider the point P on the next page. To use the numbers on the axes to label this point, we imagine dropping a vertical line from the x-axis to P and extending a horizontal line from the y-axis to P. This process is sometimes called ‘projecting’ the point P to the x- (respectively y-) axis. We then describe the point P using the ordered pair (2,−4). The first number in the ordered pair is called the abscissa or x-coordinate and the second is called the ordinate or y-coordinate. 8 Taken together, the ordered pair (2,−4) comprise the Cartesian coordinates 9 of the point P

Inside this book –**College Algebra PDF Book **by Carl Stitz – we can describe them using the techniques presented in Section 1.1.1. That is, we can describe a relation verbally, using the roster method, or using set-builder notation. Since the elements in a relation are points in the plane, we often try to describe the relation graphically or algebraically as well. Depending on the situation, one method may be easier or more convenient to use than another. As an example, consider the relation R = {(−2,1),(4,3),(0,−3)}. As written, R is described using the roster method. Since R consists of points in the plane, we follow our instinct and plot the points. Doing so produces the graph of R.

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## College Algebra by Carl Stitz PDF : eBook Information

**Full Book Name**– College Algebra**Author of this Book**– Carl Stitz**Language –**English**Book Genre –**Non Fiction, Novel, Algebra, Trigonometry, Mathematics, Elementary, Science**Download Format –**PDF**Size**– 5 MB**eBook Pages –**716**Price –**Free

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