5.2.3 Slopes of Parallel and Perpendicular Lines − Practice
1. The equations of four lines are given. Identify which lines are parallel. Line 1: y x
2. Show that ABCD is a trapezoid.
1 2 6 = −
Line 2: x − 2 y = − 1 Line 3: y = 4 x + 6 Line 4: y x 3
1 4 ( 6) + = −
3. Show that quadrilateral ABCD is a parallelogram.
4. The equations of four lines are given. Identify which lines are perpendicular. Line 1: y = 3 Line 2: y x 1 2 2 =− +
Line 3: x = 8 Line 4: y − 5 = 2 ( x − 3)
6. Write an equation in slope-intercept form for the line that is parallel to y = − 7 x − 8 and that passes through the point (7, − 8).
5. Show that quadrilateral PQRS is a rectangle.
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