Answer:
In this equation "a" is a variable.
Step-by-step explanation:
A variable is a term used that does not necessary have a value attached to it. Instead any value can be input in for it.
In reflection, translation and rotations the pre image and the image are congruent and in dilation they are similar <span />
Answer:

Step-by-step explanation:
divide each by x
Answer:
The First Image
Step-by-step explanation:
A dilation is a type of transformation that enlarges or reduces a figure, therefore in the first Image we see an increase in scale factor of 2.