ling has m dolls. Alice has 3 times as many doll's as Long. Betty has 7 fewer doll's than Alice. How many dolls do they have in
1 answer:
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Answer: Reflection about x-axis
Step-by-step explanation:
Given
Initially, vertices are
After reflection they become
It is clear that the x coordinate remains unchanged and the y coordinate changes its sign. It occurs when reflection is done about the x-axis.
For example, when (a,b) is reflected about the x-axis, it becomes (a,-b).
So, here reflection is being done about the x-axis.
