To solve the absolute value inequality 2x – 4 < 8, we follow these steps:
- Start by isolating the absolute value expression. We can do this by adding 4 to both sides:
- Next, divide both sides by 2:
- Now we need to consider the other side of the absolute value inequality, which is when the expression is less than -8. We set it up as follows:
- Add 4 to both sides again:
- And divide by 2:
2x - 4 + 4 < 8 + 4
2x < 12
x < 6
2x - 4 > -8
2x - 4 + 4 > -8 + 4
2x > -4
x > -2
Combining both parts of the solution, we find that:
-2 < x < 6
This gives us the solution where x is between -2 and 6.
To graph the solution:
- Plot open circles at -2 and 6 on a number line to indicate that these points are not included in the solution.
- Shade the region between -2 and 6 to represent all the values of x that satisfy the inequality.
The final solution, -2 < x < 6, indicates all numbers x that lie in this range.