Algebra Help
Not what you're looking for?
Solve by graphing. Indicate whether each system is independent, dependent or inconsistent.
1. y= 2x-1
x+y= 2
2. 2x-3y=12
3y-2x= -12
3. 3x-y=4
3x-y=0
Solve each system by the substitution method. Indicate whether each system is independent, dependent or inconsistent
4. x-y=3
3x-2y=3
5. 3y=x+5
3x-9y= -10
6. x=1/8y -1
y=1/4x +39
Solve by the addition method. Indicate whether each system is independent, dependent or inconsistent.
7. -3x+y=3
2x-3y=12
8. x+3(y-1)=11
2(x-y) +8y=28
9. 1/3x - 1/6y = 1/3
1/6x +1/4y= 0
Solve each compound inequality. State the solution set using interval notation and graph it
10. x≤ 0 and x - 6< 3
11. 1/3x >2 and 1/4x>2
12. -1/2x<6 or 2/3x<4
Solve each absolute value equation and graph the solution set
13. │x/2│-5= -1
14. │2x-8│=0
Solve each absolute value inequality and graph the solution set.
15. │5x-1│≤ 14
16. 1> 1/2│6- x │-3/4
Graph each compound or absolute value inequality
17. x + y ≤ 1 or y ≤ 4
18. │x-3y│≥9
Purchase this Solution
Solution Summary
This solution is comprised of a detailed explanation to solve by graphing, the substitution method, addition method, indicate whether each system is independent, dependent or inconsistent, solve compound inequality and graph the solution set, and graph each compound or absolute value inequality.
Solution Preview
Solve by graphing. Indicate whether each system is independent, dependent or inconsistent.
1. y= 2x-1 and x+y= 2
The system is independent. x = 1 and y =1.
2. 2x-3y=12 and 3y-2x= -12
The system is dependent.
3. 3x-y=4 and 3x-y=0
The system is inconsistent.
Solve each system by the substitution method. Indicate whether each system is independent, dependent or inconsistent
4. x-y=3 and 3x-2y=3
x = y + 3
3x - 2y = 3
3(y + 3) - 2y =3
3y + 9 - 2y =3
y = -6
x = -3
There is only one ...
Purchase this Solution
Free BrainMass Quizzes
Multiplying Complex Numbers
This is a short quiz to check your understanding of multiplication of complex numbers in rectangular form.
Solving quadratic inequalities
This quiz test you on how well you are familiar with solving quadratic inequalities.
Probability Quiz
Some questions on probability
Know Your Linear Equations
Each question is a choice-summary multiple choice question that will present you with a linear equation and then make 4 statements about that equation. You must determine which of the 4 statements are true (if any) in regards to the equation.
Graphs and Functions
This quiz helps you easily identify a function and test your understanding of ranges, domains , function inverses and transformations.