What are the end points of the triangle called? how are they labeled?

For this case we have that by definition:

A triangle is defined by three lines that are called sides, or by three points called vertices.

We know that:

The end points of the triangle are called vertices.

They are labeled in capital letters.

answer: for each 3 girls there is 2 boys . 3: 2

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i believe it is c.y = 9x

rise over run. 9 units up over 1 unit right or 9/1