Slope Worksheet With Answers - Mat 1101 - 2009 Page 2

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13. Find the domains of the functions below:
14. Given f(x) = –4x + 6:
x
a)
f
(
x
)
= x
+
7
b)
f
(
x
)
=
a) Find f(-2)
b) Find f(0)
x
4
x ≥ -7
all reals except 4
14
6
15. Find the equation of the line having the following properties:
5
a) m = –8.3 , (0, 3.9)
b) m =
, (1, -2)
c) Through (1, 2) and (3, 8)
8
y = -8.3x + 3.9
5x – 8y = 21
3x – y = 1
or
y = 3x – 1
16. Given the graph of the line below, find the following. (Assume each tick mark is “1”.)
a. ∆x: 4 (or -4)
b. ∆y: _3 (or -3)
3
c. The slope of the line
d. The y-intercept of the line _(0, -5)_
4
3
e. The equation of the line y =
x – 5
4
f. A point on the line other than the y-intercept. (-4, -8); (4, -2); (8, 1)
17. Graph the line given by 4x – 5y = 20
18. Find the y-intercepts of the following lines:
x
y
3
a) y =
x
7
9 .
__(0, -7.9)__
0
-4
5
5
0
b) 3x – 8y = 48
__(0, -6)__
c) x = 5y + 35
__(0, -7)__
19. Write the following in slope-intercept form.
a) 4x – 7y = 15
b) 12x + 3y = 36
c) 2x + 5y = 16
4
15
4
15
y =
x
y = -4x + 12
y =
x
7
7
7
7

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