Unit 2-2 Slope. What is slope? The _____ of a line in a coordinate plane is a number that describes the steepness of the line. Any points on.

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Presentation transcript:

Unit 2-2 Slope

What is slope? The _________ of a line in a coordinate plane is a number that describes the steepness of the line. Any ____ points on a line can be used to determine the slope. Slope 2

A fraction with zero in the denominator is undefined because it is impossible to divide by zero. Remember!

Examples Use the slope formula to determine the slope of each line. AB = AD = CD = Use the slope formula to determine the slope of JK through J(3, 1) and K(2, –1).

Parallel and Perpendicular Lines

Examples Graph each pair of lines. Use their slopes to determine whether they are parallel, perpendicular, or neither. UV and XY for U(0, 2), V(–1, –1), X(3, 1), and Y(–3, 3)

Examples Graph each pair of lines. Use their slopes to determine whether they are parallel, perpendicular, or neither. GH and IJ for G(–3, –2), H(1, 2), I(–2, 4), and J(2, –4)

Examples Graph each pair of lines. Use their slopes to determine whether they are parallel, perpendicular, or neither. CD and EF for C(–1, –3), D(1, 1), E(–1, 1), and F(0, 3)