Rewrite r=2.5 sin(theta) in rectangular form.

a) x^2+y^2+0.4y=0
b)x^2-y^2+5y=0
c)x^2+y^2-6.25y=0
d)x^2+y^2-2.5y=0

Given a circle with measures of (c, d, and r) and a circle with measures of (c', d', and r'), what is d if c c' = 12 and d' = 0.50? a) 3 b) 6 c) 12 d) 24

Mary beth used the mapping rule to find the coordinates of a point that had been rotated 90° counterclockwise around the origin. examine the steps to determine whether she made an error. m (3, –6) is rotated 90° counterclockwise. (x, y) → (–y, x) 1. switch the x- and y-coordinates: (6, –3) 2. multiply the new x-coordinate by –1: (6(–1), –3) 3. simplify: (–6, –3) .

Find the slope of the line passing through a pair of points