Answer: Contraction = [tex]\dfrac{3}{4},\ \dfrac{1}{5}[/tex]
Expansion = 1.25, -3, -2
Step-by-step explanation:
Let k be the scale factor .
Expansion : |k|>1
Contraction : 0<|k|<1
Let's check the given scale factors :
1.25> 1, then this scale factor is an expansion.
3> 1, then this scale factor is an expansion.
|-2|=2>1, then this scale factor is an expansion.
[tex]\dfrac{3}{4}=0.75[/tex]
& 0<0.75<1 , thus [tex]\dfrac{3}{4}[/tex] is an contraction.
[tex]\dfrac{1}{5}=0.2[/tex]
& 0<0.2<1 , thus [tex]\dfrac{1}{5}[/tex] is an contraction.
