Domain and Range
Functions
Direct Variation
Linear Equations
Potluck
100
What is domain?
The set of input values (x) of a function.
100
What is the most common M&M color?
Blue
100
What is the direct variation equation?
y = kx
100
Name three types of slope.
Positive, negative, zero, undefined.
100
Is this a function?
No; 3 has 2 y's
200
What is the domain of the function?
All real numbers or
(-\infty, infty)
200
Is this a function?
Yes
200
What animal is known to laugh and has been proven to have a sense of humor?
The rat
200
Find the slope between the points (-3, 1) and (4, -2).
-3/7
200
What point do all direct variation equations have in common?
(0, 0)
300
What is the range?
(-infty, -1]
300
Write the equation in function notation: y = 3x - 2
f(x) = 3x - 2
300
Suppose y varies directly with x, and y = 20 when x = 4. Write the function that models the variation.
y = 5x
300
Write an equation in slope-intercept form:
y=-1/3x-2
300
How many toes does a cat have?
18: 10 on the front and 8 on the back
400
What is the domain of the function?
[-1, 6]
400
If f(x) = -x2 - 9, find f(2).
f(2) = -13
400
Suppose y varies directly with x, and y = 15 when x = 3. Find y when x = 7.
y = 35
400
What is Mickey Mouse's original name?
Mortimer Mouse
400
Write the equation in point slope form through the points (-1, 4) and (2, -2)
y - 4 = -2(x + 1) or y + 2 = -2(x - 2)
500
Which was the first movie to show a toilet flushing?
Psycho
500
If g(x) = 2x +5, find 6[g(-1)].
18
500
Write the direct variation equation through (2, 7).
y=7/2x
500
Write the equation in standard form:
y = -2/5x -3
2x +5y = -15
500
Evaluate f(4).
16