Math Problem Statement
Solution
Let's work through the questions one by one from your uploaded image.
1. Solve and graph the solution set on a number line:
Step 1: Simplify both sides
Multiply both sides by 12 to eliminate denominators: This simplifies to:
Step 2: Combine like terms
Move all terms involving to one side and constant terms to the other:
Step 3: Solve for
Graph:
- Draw a number line with an open circle at , shading everything to the right, as the inequality is .
Solution:
In interval notation:
2. Solve and give solution in interval notation. Graph solution on a number line.
(a)
Step 1: Solve for
First, subtract 3 from all parts of the inequality:
Now, divide by 3:
Solution:
In interval notation: Graph: Closed circle at -4, open circle at 6, shading in between.
(b)
For :
For :
Divide by -4, and reverse the inequality:
Solution:
Since this is an "or" inequality, the solution is: Graph: Shaded from to 1 (closed circle), and from 2 to (closed circle).
3. Solve:
Step 1: Consider two cases for absolute value
Case 1:
Case 2:
Solution:
4. Solve and graph the solution set on a number line. Give solutions in interval notation.
Step 1: Break the absolute value into two inequalities
Step 2: Solve the inequality
Subtract 7 from all parts:
Now divide by -3 (and reverse the inequalities):
Solution:
Graph: Open circles at and 6, shading in between.
Would you like further details or clarifications on any of these problems? Here are some related questions:
- How do you graph compound inequalities on a number line?
- What are the rules for solving absolute value equations and inequalities?
- How can interval notation be used to represent solution sets of inequalities?
- How do you solve inequalities involving multiple steps (like in question 1)?
- What happens when you divide by a negative number in an inequality?
Tip: Always remember to reverse the inequality when multiplying or dividing by a negative number!
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Math Problem Analysis
Mathematical Concepts
Inequalities
Absolute Value
Interval Notation
Graphing Inequalities
Formulas
Absolute value: |a| = a if a >= 0, |a| = -a if a < 0
Inequality manipulation rules
Interval notation: [a, b) means a is included, b is excluded
Theorems
Properties of inequalities
Rules for solving absolute value equations
Inequality multiplication/division rule (reversing when multiplying or dividing by a negative)
Suitable Grade Level
Grade 10-12 (Algebra II level)
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