The triangle shown is rotated 90 degrees counter clock wise about the origin what is the new coordinates of point A A (1,2)
B(-2,1)
C (2,1)
D (-2,-1)

no pic =/

Step-by-step explanation:

Final answer is 3.

Step-by-step explanation:

Question says that the graph of has been shifted into the form .

Now we need to find about what is the value of k.

We know that formula is vertex form of parabola where (h,k) gives vertex of the parabola.

From graph, we see that vertex of the parabola is at point (2,3).

Now compare (h,k) with (2,3).

We get: k=3.

Hence final answer is 3.