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1.1 Lines. 8/21/2012 Calculus AB Ms. Brewer. Vocab/Formulas. Increments: If a particle moves from the point (x 1 ,y 1 ) to the point (x 2 ,y 2 ), the increments in its coordinates are:. Vocab/Formulas. Slope:

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## 1.1 Lines

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**1.1 Lines**8/21/2012 Calculus AB Ms. Brewer**Vocab/Formulas**• Increments: If a particle moves from the point (x1,y1) to the point (x2,y2), the increments in its coordinates are:**Vocab/Formulas**• Slope: • Traditional Way: Let P1(x1,y1) and P2(x2,y2) be points on a nonvertical line, L. The slope of line L is: • Trig Way: • Vertical Lines: slope is ______________ θ**Vocab/Formulas**y1 y2 m1 • Parallel Lines: • Perpendicular Lines: • Equations of Lines • Point-Slope: • Slope-Intercept: • General: P.S. Point-Slope is the best equation to use to start! m2 m1 m2**Example 1: Find the coordinate increments from (-7, 4) to**(-1,6) Example 2: Find the equations for the vertical and horizontal lines through the point (4,-2).**Example 3: Write the three different equations for the line**through the points (1,2) and (-1,3)**Example 5: Write an equation for the line through the point**(-2,3) that is (a) parallel to L and (b) perpendicular to L**Example 7: Find a line of regression.**• Stat • Edit • Put data into L1 and L2 • 2nd Quit • Stat • Calc • #4 LinReg • y=ax + b • a= • b=**Assignment**Pg. 9 3-48 (by 3’s), 49

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