Question

Each column of the matrix (blank) represents a vertex of a triangle. If Bella scales the triangle by finding 3T, what are the vertices of the scaled triangle?

Answer 1

(d) (0, 0), (0, 9), (9, 0)

Explanation:

You want to know the vertices represented by the matrix 3T, where ...

`T=\left[\begin{array}{ccc}0&0&3\\0&3&0\end{array}\right]`

Scaled

The scaled matrix 3T is found by multiplying each element by the scale factor:

`3T=\left[\begin{array}{ccc}0&0&9\\0&9&0\end{array}\right]`

Each column is an (x, y) pair representing a vertex. The vertices of the scaled triangle are ...

(0, 0), (0, 9), (9, 0)

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