Question

Triangle ABC has vertex coordinates A(–5, 2), B(–1, 3), and C(–1, 1). It is rotated 90° clockwise around the origin. What are the coordinates of B'?

Answer 1

Answer:

(3,1)

Step-by-step explanation:

The rule for a 90 degree clockwise rotation:

$(x,y)\rightarrow(y,-x)$

B is (-1, 3).

Apply the rule:

$\frac{(-1,3)\rightarrow\boxed{(3,1)}}{(x,y)\rightarrow(y,-x)}\\\\3 * 1 = 3\\\\-1 * -1 = 1$

Option D should be the correct answer.