Download unit7practicetest

Unit 7 Practice Test
Directions: Take the practice test by solving each problem and then
checking your answers with the answer key. If there is a problem that
you are not sure about how to solve, then KMAIL or phone your teacher
for help.
1. Which is a solution of the equation? Given the linear equation. 2x + 4y = 12
A.
(3,3)
B.
(2,3)
C.
(1,3)
D.
(2,2)
2. Identify the coordinates of point B, from the graph above.
Given a coordinate plane with plotted points.
A.
(3,4)
B.
(4,3)
C.
(-2,-2)
D.
(2,-2)
3. What are the x- and y-intercepts of the line? Given a linear equation. 2x + 4y = 8
A.
x-intercept -2, y-intercept 3
B.
x-intercept 4, y-intercept 2
C.
x-intercept 4, y-intercept 3
D.
x-intercept 4, y-intercept -2
4. On the graph shown above, what is the slope of the line passing through points A and
B?
A.
–
B.
3
2
–3
2
C.
D.
5
2
–3
5. What is the slope of the line that passes through the points (4,1) and (1,2)?
A.
⅓
B.
–⅓
C.
⅔
D.
–⅔
6. Select the equation of the line in slope-intercept form. 3x + 6y = 18
A.
3y = 2x + 1
B.
-3y = 2x
C.
y = -½x + 3
D.
No answer shown.
7. What is the slope of a line parallel to the line whose equation is 6x – 3y = 6?
A.
2
B.
-2
C.
3
D.
-3
8. What is the relationship between the lines determined by these two equations?
2x + 3y = -12
4x + 6y = -24
A.
parallel
B.
perpendicular
C.
Neither parallel nor perpendicular
D.
They are the same line.
9. Which of the following has a slope of –3 and a y-intercept of 5?
A.
B.
C.
D.
y = –3x + 4
y = –3x + 5
y = –3x + 6
No answer shown.
10. Which is the graph of the inequality y < 2x - 2?
A.
Continued on next page.
B.
C.
D.
11. Write the equation of the graph shown above.
A.
y = ⅓x + 1
B.
y = 3x + 1
C.
y = -⅓x - 1
D.
y = ⅓x - 1
12. Write the inequality of the graph shown above.
A.
y > -3x - 1
B.
y ≥ 3x - 1
C.
y < -3x - 1
D.
y ≤ -3x - 1
13. What is the slope of a line parallel to the line whose equation is 12x + 6y = 21?
A.
-3
B.
3
C.
21
D.
-2