QUESTION IMAGE
Question
5
match the correct behavior with the function.
function
$f(x) = 2|x - 6| - 5$
$g(x) = -dfrac{1}{2}|x + 3| + 2$
$h(x) = -4|x + 6| + 1$
opens up
opens down
vertex moves to the left
vertex moves to the right
vertex moves up
vertex moves down
vsf is a stretch (more steep) than the parent function
vsf is a compression (less steep) than the parent function
Step1: Recall absolute value form
The parent function is $f(x)=|x|$. Transformed form: $a|x-h|+k$, where:
- $a>0$: opens up; $a<0$: opens down
- $h$: right if $h>0$, left if $h<0$
- $k$: up if $k>0$, down if $k<0$
- $|a|>1$: stretch; $0<|a|<1$: compression
Step2: Analyze $f(x)=2|x-6|-5$
- $a=2>0$: opens up
- $h=6>0$: vertex right
- $k=-5<0$: vertex down
- $|a|=2>1$: stretch
<Expression>
Opens Up: ✅, Vertex Moves to the RIGHT: ✅, Vertex Moves Down: ✅, VSF is a stretch (more steep) than the parent function: ✅
</Expression>
Step3: Analyze $g(x)=-\frac{1}{2}|x+3|+2$
- $a=-\frac{1}{2}<0$: opens down
- $h=-3<0$: vertex left
- $k=2>0$: vertex up
- $|a|=\frac{1}{2}<1$: compression
<Expression>
Opens Down: ✅, Vertex Moves to the LEFT: ✅, Vertex Moves Up: ✅, VSF is a compression (less steep) that the parent function: ✅
</Expression>
Step4: Analyze $h(x)=-4|x+6|+1$
- $a=-4<0$: opens down
- $h=-6<0$: vertex left
- $k=1>0$: vertex up
- $|a|=4>1$: stretch
<Expression>
Opens Down: ✅, Vertex Moves to the LEFT: ✅, Vertex Moves Up: ✅, VSF is a stretch (more steep) than the parent function: ✅
</Expression>
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| Function | Opens Up | Opens Down | Vertex Moves to the LEFT | Vertex Moves to the RIGHT | Vertex Moves Up | Vertex Moves Down | VSF is a stretch (more steep) than the parent function | VSF is a compression (less steep) that the parent function | ||
|---|---|---|---|---|---|---|---|---|---|---|
| $g(x)=-\frac{1}{2} | x+3 | +2$ | ❌ | ✅ | ✅ | ❌ | ✅ | ❌ | ❌ | ✅ |
| $h(x)=-4 | x+6 | +1$ | ❌ | ✅ | ✅ | ❌ | ✅ | ❌ | ✅ | ❌ |