Math 200 Elementary Algebra
F Practice Exam #2
Show all work and box your answers.
1. a. Find the ordered pair solution of
2
4
3
xy
corresponding to
4x
.
b. Graph the above line.
2. Determine whether the following pair of lines are parallel, perpendicular or
neither and provide an explanation.
826
253
yx
yx
3. a. Find the x and y-intercept of the line
1025 yx
.
b. Use the x and y-intercepts to graph the line.
4. Find the equation of the line passing through (-2,1) and (1,5).
5. Find the equation of the line perpendicular to
52 yx
passing through (3,1).
6. Solve by graphing:
42
72
yx
yx
7. Solve by substitution:
153
5
3
1
yx
xy
8. Solve by any method:
832
1143
yx
yx
9. Ernie’s father is 28 years older than he is. If we added Ernie’s age to his father’s
age, the total would be 98. How old is Ernie? How old is his father?
10. Megan has 37 coins in her purse. Some are dimes and the rest are quarters. The
value of the coins is $5.95. How many dimes does she have?
11. A truck driver started for his destination at an average speed of 60 miles per hour.
When it began to snow, he had to drop his speed to 40 miles per hour. It took the
truck driver 9 hours to reach his destination, which was 425 miles away. How
many hours after the driver started did the snow begin to fall?