Step 4: Test similar situations, except with negative slopes: y x. Did you notice that we have the same relationship, except in the opposite direction? That is, y 2x is steeper than y x in the positive direction, and y 2x is steeper than y x, but in the negative direction. And y 0.5x is fl atter than y x in the positive direction, and y 0.5x is fl atter than y x, but in the negative direction. ANSWERS TO YOU TRY EXERCISES 1) The ramp rises 7 in. for every 16 horizontal inches. 2) a) m 4 7 b) m 1 3) a) m 0 b) undefi ned 4) a) x y 5 (1, 1) (2, 3) 5 5 5 (4, 1) b) x y 5 5 5 5 (1, 2) (0, 5) c) x y 5 (2, 2) 5 5 5 5 a) x 5 5 5 5 x 3 25 (0, 3) (5, 1) b) x y 5 5 5 5 y x c) x y 5 x y 12 5 5 5 1 1 www.mhhe.com/messersmith SECTION 4.2 Slope of a Line and Slope-Intercept Form 165
messersmith_power_intermediate_algebra_1e_ch4_7_10
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