review after WWW

functions

100

what is the domain?

y = (x - 3)² - 10

all real numbers

200

what is the domain?

y = 1/(sq(3x + 2))

x > -2/3

300

what is the range?

y = (x + 3)² - 2

[-2, infinity)

400

what does one-to-one mean? give an example of a function that is one to one

each output can only be reached by one unique input

geometry

100

y = 0.5x - 4

what is the slope of a line perpendicular to this?

-2

200

What is the midpoint of this line? 

A(2, 7) to B(6, -3)

(4, 2)

300

what is the length of this line?

A(2, 7) to B(6,-3)

sq(32)

400

x² + y ²  +4x - 2y = 4

what is the center and radius of this circle?

center (-2, 1)

radius = 3