Absolute value — Grade 7 Accelerated, what it means and where it is taught
|x| — distance from zero, always positive or zero.
Taught in Grade 7 Accelerated.
Where it is taught
- Positive & Negative Rational Number Operations
- Absolute Value, Piecewise & Step Functions
- Integers & Absolute Value
Practise this idea
4 questions in the course bank use Absolute value, in Absolute Value, Piecewise & Step Functions, Parent Functions & Transformations, Integers & Absolute Value.
Problem 1
Evaluate |-9|.
Worked answer
9
|-9| = 9
Problem 2
Solve |x + 4| = -3. If there is no solution, answer "none".
Worked answer
none
Absolute value is never negative
So no solution
Problem 3
An absolute value graph has its corner at (3,-2) and is not stretched. Write its equation.
Worked answer
y=|x-3|-2
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Problem 4
Which is furthest from zero: -9, 4, or -2?
- -9
- 4
- -2
- They are equal
Worked answer
-9
|-9| = 9, the largest distance