Question

What would the image below look like after a rotation of 909, centered 6. at the origin? D с C. 1 A A D. В. e A

Answer 1

during the rotaion with 90 degrees the coordinates are transform into

(x,y) change to (-y,x)

In the given graph:

The coordinates of A is (-3,0), T(-1,-1), C(-4,-3)

So, after the rotaion to 90 degree

`\begin{gathered} (x,y)\rightarrow(-y,x) \\ A(-3,0)\rightarrow A^(\prime)(0,-3) \\ B(-1,-1)\rightarrow B^(\prime)(1,-1) \\ C(-4,-3)\rightarrow C^(\prime)(3,-4) \end{gathered}`

Plot them on the graph:

This graph is similar to the graph C

so, the image after rotaion to 90 degree is C

Answer: C)