Math 104 Test 1 (Chapters 1 – 3) Spring 2007 Name_____________________________
Always show enough work to show how you arrived at your answer. If work is not shown, you may not
earn full credit for the problem.
1. Hot coffee is poured into a cup at room temperature. Let F represent the temperature of the coffee t
minutes after the coffee was poured. Sketch a qualitative graph that shows the relationship between
the variables. (4 pts.)
2. Let
1.5 4y x
.
a. What is the slope of this line? _______ (2 pts.)
b. What is the y – intercept? _______ (2 pts.)
c. Sketch the graph. (4 pts.)
d. What is the slope of a line parallel to this line? _______ (2 pts.)
e. What is the slope of a line perpendicular to this line? _______ (2 pts.)
3. Find the x-intercept for the line
2 5 3( 1) 4y x
. (4 pts.)
x-intercept = _____________
4. Use interval notation for the inequality
3x
. (3 pts.)
[26]
5
4
3
2
1
-4 -3 -2 -1 0 1 2 3 4 5
-1
-2
-3
-4
