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Name: ________________________ Class: ___________________ Date: __________
ID: A
Quest - Exam - Review - Sections 8.1-8.4
8. y = −3x − 9; ÊÁË 5, a ˆ˜¯
Tell whether the relation represented by the
graph is a function.
9. 2x + 7y = −5; ÊÁË a, 1 ˆ˜¯
1.
10. 5x − 6y = 23; ÊÁË a, − 3 ˜ˆ¯
Find the slope of the line through the given
points.
11. (34, 15), (16, 30)
12. (9, 14), ÁÊË −7, − 6 ˜ˆ¯
2.
13. ÊÁË 36, − 5 ˆ˜¯ , ÊÁË 6, 5 ˆ˜¯
Identify the slope and y-intercept of the line
with the given equation.
14. 3x + 2y = 5
3.
15. 4x − 10y = −9
16. −x + 5y = 8
17. Write an equation of the line that is parallel to the
line y = −x + 4 and passes through the point (0, 10).
18. Write an equation of the line that is perpendicular
to the line y = 2x − 1 and passes through the point
ÁÊ 0, − 3 ˜ˆ .
Ë
¯
Write the equation in function form.
4. 3x + 5y = −10
5. 6y − 4x = 24
6. −x − 4y = 10
Find the value of a that makes the ordered pair
a solution of the equation.
7. y = x + 11; ÊÁË −1, a ˆ˜¯
1
Name: ________________________
ID: A
2
20. y = − x − 2
3
Find the intercepts of the equation's graph.
Then graph the equation on the given
coordinate grid.
19. 1.8x + 1.5y = 9
21. The table below shows an employee's hourly wage over 25 years with a company. Show that the table represents a
linear function by making a scatter plot on the grid. Then write an equation for the function.
Time (in years), x
Hourly wage (in dollars), y
0
9.5
5
12
10
14.5
2
15
17
20
19.5
25
22
ID: A
Quest - Exam - Review - Sections 8.1-8.4
Answer Section
1. function
2. not a function
3. function
3
4. y = − x − 2
5
2
5. y = x + 4
3
1
5
6. y = − x −
4
2
7. 10
8. −24
9. −6
10. 1
5
11. −
6
5
12.
4
1
13. −
3
3
5
14. m: − ; y-intercept:
2
2
2
9
15. m: ; y-intercept:
5
10
1
8
16. m: ; y-intercept:
5
5
17. y = −x + 10
1
18. y = − x − 3
2
19. x-intercept: 5,
y-intercept: 6;
1
ID: A
20. x-intercept: −3,
y-intercept: −2;
1
21. y = − x + 9.5;
2
2
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