2.5 Pract ice - Par allel and Perpend icular Lines
Find the slope of a line parallel to each given line.
1) y = 2x + 4
3) y = 4x 5
5) x y = 4
7) 7x + y = 2
2) y =
2
3
x + 5
4) y =
10
3
x 5
6) 6x 5y = 20
8) 3x + 4y = 8
Find the slope of a line pe rpendicular to each given line.
9) x = 3
11) y =
1
3
x
13) x 3y = 6
15) x + 2y = 8
10) y =
1
2
x 1
12) y =
4
5
x
14) 3x y = 3
16) 8x 3y = 9
Write the point-slope form of the equation of the line described.
17) through: (2, 5), parallel to x = 0
18) through: (5, 2), parallel to y =
7
5
x + 4
19) through: (3, 4), parallel to y =
9
2
x 5
20) through: (1, 1), parallel to y =
3
4
x + 3
21) through: (2, 3), parallel to y =
7
5
x + 4
22) through: ( 1, 3), parallel to y = 3x 1
23) through: (4, 2), parallel to x = 0
24) through: (1, 4), parallel to y =
7
5
x + 2
25) through: (1, 5), perpendicular to x + y = 1
26) through: (1, 2), perpendicular to x + 2y = 2
27) through: (5, 2), perpendicular to 5x + y = 3
1
Source: http://www.wallace.ccfaculty.org/book/book.html
Saylor Course: http://www.saylor.org/courses/ma001/
28) through: (1, 3), perpendicular to x + y = 1
29) through: (4, 2), perpendicular to 4x + y = 0
30) through: ( 3, 5), perpendicular to 3x + 7y = 0
31) through: (2, 2) perpendicular to 3y x = 0
32) through: ( 2, 5). perpe ndicular to y 2x = 0
Write the slope-intercept form of the equation of the line described.
33) through: (4, 3), parallel to y = 2x
34) through: ( 5, 2), parallel to y =
3
5
x
35) through: ( 3, 1), parallel to y =
4
3
x 1
36) through: ( 4, 0), parallel to y =
5
4
x + 4
37) through: ( 4, 1), parallel to y =
1
2
x + 1
38) through: (2, 3), parallel to y =
5
2
x 1
39) through: ( 2, 1), parallel to y =
1
2
x 2
40) through: ( 5, 4), parallel to y =
3
5
x 2
41) through: (4, 3), perpendicular to x + y = 1
42) through: ( 3, 5), perpendicular to x + 2y = 4
43) through: (5, 2), perpendicular to x = 0
44) through: (5, 1), perpendicular to 5x + 2y = 10
45) through: ( 2, 5), perpen dicular to x + y = 2
46) through: (2, 3), perpendicular to 2x + 5y = 10
47) through: (4, 3), perpendicular to x + 2y = 6
48) through: ( 4, 1), perpen dicular to 4x + 3y = 9
Beginning and Intermediate Algebra by Tyler Wallace is licensed under a Creative Commons
Attribution 3.0 Unported License. (http://creativecommons.org/licenses/by/3.0/)
2
Source: http://www.wallace.ccfaculty.org/book/book.html
Saylor Course: http://www.saylor.org/courses/ma001/
2.5
Answe rs - Parallel and Perpendicular Lines
1) 2
2)
2
3
3) 4
4)
10
3
5) 1
6)
6
5
7) 7
8)
3
4
9) 0
10) 2
11) 3
12)
5
4
13) 3
14)
1
3
15) 2
16)
3
8
17) x = 2
18) y 2 =
7
5
(x 5)
19) y 4 =
9
2
(x 3)
20) y + 1 =
3
4
(x 1)
21) y 3 =
7
5
(x 2)
22) y 3 = 3(x + 1)
23) x = 4
24) y 4 =
7
5
(x 1)
25) y + 5 = (x 1)
26) y + 2 = 2(x 1)
27) y 2 =
1
5
(x 5)
28) y 3 = (x 1)
29) y 2 =
1
4
(x 4)
30) y + 5 =
7
3
(x + 3)
31) y + 2 = 3(x 2)
32) y 5 =
1
2
(x + 2)
33) y = 2x + 5
34) y =
3
5
x + 5
35) y =
4
3
x 3
36) y =
5
4
x 5
37) y =
1
2
x 3
38) y =
5
2
x 2
39) y =
1
2
x 2
40) y =
3
5
x 1
41) y = x 1
42) y = 2x + 1
43) y = 2
44) y =
2
5
x + 1
45) y = x + 3
46) y =
5
2
x + 2
47) y = 2x + 5
48) y =
3
4
x + 4
Beginning and Intermediate Algebra by Tyler Wallace is licensed under a Creative Commons
Attribution 3.0 Unported License. (http://creativecommons.org/licenses/by/3.0/)
3
Source: http://www.wallace.ccfaculty.org/book/book.html
Saylor Course: http://www.saylor.org/courses/ma001/