Download Algebra 1 Name: 4.1 – 4.3 Review Period: _____ For problems 1

Algebra 1
4.1 – 4.3 Review
Name: _____________________________
Period: _____
For problems 1-4, simplify.
1. 5x  x  4
2. 3  5  x  8
3. 9  4  x  13
5. Solve for a if 3a  b  9
6. Solve for m if 4m 10n  12
8. Find the equation of the line in:
a. point-slope form
i.  4, 33 and  9, 45
4. 2 x  2  6  x  10
7. Solve for k if
w  3 k  7
2w
5
b. intercept form
ii.  6, 47  and  2, 11
iii.  38, 549 and  21, 311
2
x through the point  0,8 .
3
2
10. Write an equation perpendicular to y  5  x through the point  0, 10 .
3
9. Write an equation parallel to y  5 
11. Write an equation parallel to y  7  2 x through the point  3,12  .
12. Write an equation perpendicular to y  7  5 x through the point 15, 4 .
13. Mr. Smith went to the store with $20.00 in his pocket. He wanted to buy some candy bars, priced at
$0.79 each.
a. Write an equation in intercept to model how much money is in his pocket after buying x number of
candy bars.
b. What does a represent in this situation? What does b represent in this situation?
c. If he bought 22 candy bars, how much money does he have left?
d. If he has $9.73 in his pocket, how many candy bars did he buy?
14
14. Describe the correlation. If the correlation is positive or negative, draw in the line of best fit.
12
a)
10
b)
c)
4
4
8
2
2
6
4
5
5
2
10
15
20
25
4
2
5
2
2
5
5
4
Algebra 1
4.1 – 4.3 Review
Name: _____________________________
Period: _____
For problems 1-4, simplify.
1. 5x  x  4
2. 3  5  x  8
3. 9  4  x  13
5. Solve for a if 3a  b  9
6. Solve for m if 4m 10n  12
8. Find the equation of the line in:
a. point-slope form
i.  4, 33 and  9, 45
4. 2 x  2  6  x  10
7. Solve for k if
w  3 k  7
2w
5
b. intercept form
ii.  6, 47  and  2, 11
iii.  38, 549 and  21, 311
2
x through the point  0,8 .
3
2
10. Write an equation perpendicular to y  5  x through the point  0, 10 .
3
9. Write an equation parallel to y  5 
11. Write an equation parallel to y  7  2 x through the point  3,12  .
12. Write an equation perpendicular to y  7  5 x through the point 15, 4 .
13. Mr. Smith went to the store with $20.00 in his pocket. He wanted to buy some candy bars, priced at
$0.79 each.
a. Write an equation in intercept to model how much money is in his pocket after buying x number of
candy bars.
b. What does a represent in this situation? What does b represent in this situation?
c. If he bought 22 candy bars, how much money does he have left?
d. If he has $9.73 in his pocket, how many candy bars did he buy?
14
14. Describe the correlation. If the correlation is positive or negative, draw in the line of best fit.
12
a)
10
b)
c)
4
4
8
2
2
6
4
5
5
2
10
15
20
25
4
2
5
2
2
5
5
4