Group Activity Parallel and Perpendicular Lines (a) Assume
Chapter 0, Problem P.4.70(choose chapter or problem)
Group Activity Parallel and Perpendicular Lines
(a) Assume that \(c\ \neq\ d\) and a and b are not both zero. Show that ax + by = c and ax + by = d are parallel lines. Explain Why the restrictions on a, b, c, and d are necessary.
(b) Assume that a and b are not both zero. Show that ax + by = c and bx - ay = d are perpendicular lines. Explain why the restrictions on a and b are necessary.
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