Math Mat 190 Test 1 Template - 2008 Page 2
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1
213. Find the domains of the functions below:
3
2
a)
( f
) x
=
x 3
+
x 2
−
8
b)
( f
) x
=
x
−
2
c)
( f
) x
=
x
+
1
14. Find the equation of the line having the following properties:
a) slope of 1.8 and passing through (0, -2.1). ______________________
1
b) slope of
−
and passing through (0, 3). ______________________
6
1
c) slope of 2 and passing through (0,
−
). ______________________
2
15. Given the graph of the line below, find the following. (Assume each tick mark is “1”.)
a. ∆x: _______
b. ∆y: ______
c. The slope of the line _______ d. The y-intercept of the line ______
e. The equation of the line _______________.
f. A point on the line other than the y-intercept. ________
16. Determine whether the data in the table below
17. Find the y-intercepts of the following lines:
represents a linear or a nonlinear function.
2
x
y
a) y =
−
x
+
5
_______________
3
-2
-7
-1
-5
b) 2x – 5y = 15
_______________
1
1
2
3
4
7
c) 4x = 3y + 24
_______________
18. Given f(x) = –4x – 9:
a) Find f(2)
b) Find f(–3)
c) Find f(0)
19. Write the following in slope-intercept form.
a) 3x + 5y = 15
b) 2x – 3y = 6
c) 4x – 7y = 28
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