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Unformatted text preview: will have an undefined slope and vice versa. Perpendicular lines are lines the intersect at right angles and the product of their slopes are equal to 1. If two lines are represented by equations y, =m, x, +c & y^2 =m^2x^2+c then m, &m^2 represent their slopes, & if the two lines are perpendicular then m^1m^2=1. For example, 3y+2x=4 & 6x4y=5 are perpendicular lines....
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 Spring '11
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