Absolute Value Functions (HSC SSCE Mathematics Advanced): Quizzes

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Absolute Value Functions
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What is the general form of an absolute value function?

f(x)=ax+bf(x) = |ax + b| where a0a \neq 0

What is the vertex location of f(x)=ax+bf(x) = |ax + b|?

(ba,0)\left(-\frac{b}{a}, 0\right)

What is the range of any absolute value function f(x)=ax+bf(x) = |ax + b|?

y0y \geq 0

What is the domain of f(x)=ax+bf(x) = |ax + b|?

All real numbers (R\mathbb{R})

What shape does the graph of an absolute value function form?

V-shape opening upward

How does parameter aa affect the graph when a|a| is larger?

The arms become steeper

How many solutions does ax+b=k|ax + b| = k have when k>0k > 0?

Two solutions

How many solutions does ax+b=k|ax + b| = k have when k<0k < 0?

No solutions

Where is the axis of symmetry for f(x)=ax+bf(x) = |ax + b|?

x=bax = -\frac{b}{a}

What is the first step in solving 2x+1+3=212|x + 1| + 3 = 21?

Isolate the absolute value expression

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