Writing Linear Equations - Ms. Wilson's Math Classes
NAME
2-4 Practice
DATE
PERIOD
Writing Linear Equations
Write an equation in slope-intercept form for the line described.
1. slope 2, y-intercept at 0
y = 2x
3. perpendicular to y = -14 x + 2, passes through (0, 0)
y = - 4x
5. perpendicular to y = - -12x + -23, passes through (2, 3)
y = 2x - 1
2. parallel to y = 4x + 2, y-intercept at 4
y = 4x + 4
4. parallel to y = ?3x + 4, x-intercept at 4
y = -3x + 12
6. slope - -23, x-intercept at 3
y = - -23 x + 2
Write an equation in slope-intercept form for each graph.
Copyright ? Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
7.
y 4
2 (0, 2)
-4 -2 O -2
2 4x
-4
8.
y
4
(4, 4)
2
-2 O 2 4 x -2 (0, -2)
9.
y
(-3, 3)4
2
-4 -2 O 2 4 x -2 (3, -1)
y = 2
y = -32 x - 2
y = - -23 x + 1
Write an equation in slope-intercept form for the line that satisfies each set of conditions.
10. slope -5, passes through (-3, -8)
11. slope -45 , passes through (10, -3)
y = -5x - 23
12. slope 0, passes through (0, -10)
y = -45 x - 11
13. slope - -23, passes through (6, -8)
y = -10
14. parallel to y = 4x - 5, y-intercept at -6
y = - -23 x - 4
15. slope -16, x-intercept at -1
y = 4x - 6
16. perpendicular to y = 3x - 2 passes through (6, -1)
y = - -13 x + 1
y = -16 x + -16
17.
parallel to y =
y = -23 x - 6
-23
x
-
10,
x-intercept
at
9
18. passes through (-8, -7), perpendicular to the graph of y = 4x - 3 y = - -14 x - 9
19. RESERVOIRS The surface of Grand Lake is at an elevation of 648 feet. During the
current drought, the water level is dropping at a rate of 3 inches per day. If this trend
continues, write an equation that gives the elevation in feet of the surface of Grand Lake
after x days. y = -0.25x + 648
Chapter 2
26
Glencoe Algebra 2
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