Section 2.3 Lines

Before Starting this Section, Review

  1. 1 Evaluating algebraic expressions (Section P.1 , page 15)

  2. 2 Solving linear equations (Section 1.1 , page 83)

  3. 3 Graphs of equations (Section 2.2 , page 186)

Objectives

  1. 1 Find the slope of a line.

  2. 2 Write the point–slope form of the equation of a line.

  3. 3 Write the slope–intercept form of the equation of a line.

  4. 4 Recognize the equations of horizontal and vertical lines.

  5. 5 Recognize the general form of the equation of a line.

  6. 6 Find equations of parallel and perpendicular lines.

  7. 7 Model data using linear regression.

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