Parallel and Perpendicular Lines (Grade 9)
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Parallel and Perpendicular Lines
1.
In a plane, if two lines are perpendicular to the same line, are they parallel?
- Yes
- No
2.
Are two lines with the same slope are perpendicular?
- Yes
- No
3.
Perpendicular lines have slopes that are opposite in sign and reciprocals of each other.
- True
- False
4.
Lines l and m intersect to form congruent supplementary angles. What can you conclude?
- Lines l and m and skew.
- Lines l and m are parallel.
- Lines l and m are perpendicular.
- None of the above.
5.
Tell whether the lines with the given slopes are parallel, perpendicular, or neither.
Line 1: m = 2
Line 2: m = -2
Line 1: m = 2
Line 2: m = -2
- parallel
- perpendicular
- neither
6.
Which line is perpendicular to [math]y = 4x + 5[/math]?
- [math]y = - x/4 + 5[/math]
- [math]y = -4x + 5[/math]
- [math]y = x/4 + 5[/math]
- [math]y = 4x - 5[/math]
7.
Write an equation in slope-intercept form for a line containing (3,2) and perpendicular to the line with equation y = -2x + 6.
- [math]y = 1/2x - 2[/math]
- [math]y = 3x +3[/math]
- [math]y = 1/2x + 1/2[/math]
- [math]y = -2x + 2[/math]
8.
Which line is parallel to [math]y = 3x - 7[/math]?
- [math]y = -3x - 7[/math]
- [math]y = - x/3 + 2[/math]
- [math]y = x/3 + 7[/math]
- [math]y = 3x + 10[/math]
9.
The graph of which equation passes through (-3,-2) and is perpendicular to the graph of [math]y = 3/4x + 8[/math]?
- [math]y = -3/4x - 5[/math]
- [math]y = 3/4x + 1/4[/math]
- [math]y = -4/3x + 5[/math]
- [math]y = -4/3x -6 [/math]
10.
Write an equation for a line that is perpendicular to the line [math]y=2x+7[/math].
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