Question
Solve each absolute value inequality. Graph the solution:
Hint:
|x| is known as the absolute value of x. It is the non-negative value of x irrespective of its sign. The value of absolute value of x is given by
First, we simplify the inequality and then solve it by considering the two cases. Then we plot the graph on the x- axis, or the real line R in such a way that the graph satisfies the value of x from both the cases
The correct answer is: Combining the above two solutions, we get x≤-5 and x≥5
Step by step solution:
The given inequality is
|x|+ 5 ≥ 10
Subtracting 5 from both sides, we get
|x| ≥ 10 -
Finally, we get
|x| ≥ 5
We use the definition of , which is
For, x < 0,
We have
|x| = - x ≥ 5
Multiplying on both sides, we have
X ≤ - 5
For, x ≥ 0,
We have
|x|= x ≥ 5
That is
X ≥ 5
Combining the above two solutions, we get
X ≤ - 5 and x ≥ 5
We plot the above inequality on the real line.
The points -5 and 5 are included in the graph.
Subtracting 5 from both sides, we get
Finally, we get
We use the definition of , which is
We have
Multiplying on both sides, we have
We have
That is
Combining the above two solutions, we get
We plot the above inequality on the real line.
The points -5 and 5 are included in the graph.
The given inequality contains only one variable. So, the graph is plotted on one dimension, which is the real line. Geometrically, the absolute value of a number may be considered as its distance from zero regardless of its direction. The symbol |.| is pronounced as ‘modulus’. We read |x| as ‘modulus of x’ or ‘mod x’.
Related Questions to study
Solve each absolute value inequality. Graph the solution :
Solve each absolute value inequality. Graph the solution :
Yumiko solved 
. Explain the error Yumiko made ?
Absolute value of a variable has many uses in mathematics. Geometrically, the absolute value of a number may be considered as its distance from zero regardless of its direction. The symbol |.| is pronounced as ‘modulus’. We read |x| as ‘modulus of x’ or ‘mod x’.
Yumiko solved . Explain the error Yumiko made ?
Absolute value of a variable has many uses in mathematics. Geometrically, the absolute value of a number may be considered as its distance from zero regardless of its direction. The symbol |.| is pronounced as ‘modulus’. We read |x| as ‘modulus of x’ or ‘mod x’.
of 
. Which of the hotels shown can they consider?
