A triangle is rotated 90° about the origin. Which rule describes the transformation? O (x, y) (-x,-y)
O (x, y) (-y, x)
O (x, y) (-y,-x)
O (x, y) → (y, -x)

Molly shared a spool of ribbon with 12 people. each person received 3 feet of ribbon. which equation can she use to find r, the number of feet of ribbon that her spool originally had?

How many grams the dog will eat in 3 days?

What does the sign of the slope tell you about a line?