Pentagon K'L'M'N'P' is a rotation of KLMNP counterclockwise about the origin through an angle of 90∘. Which of the following is an algebraic representation of this rotation? Group of answer choices

(x, y)⟶(−y, x)

(x, y)⟶(x,−y)

(x, y)⟶(−x, y)

(x, y)⟶(−x,−y)

Place the following steps in order to complete the square and solve the quadratic equation,

The figure shows triangle def and line segment bc, which is parallel to ef: triangle def has a point b on side de and point c on side df. the line bc is parallel to the line ef. part a: is triangle def similar to triangle dbc? explain using what you know about triangle similarity. part b: which line segment on triangle dbc corresponds to line segment ef? explain your answer. part c: which angle on triangle dbc corresponds to angle f? explain your answer. asap

The circle below is centered at the point (3, 1) and has a radius of length 2. what is the equation?