Relations and Functions
Linear Functions
Literal Equations
MIX
Slopes
100
What are domain and range?
Domain are x-values, and Range are the y-values
100
Evaluate f(-2) if f(x) = x+3
f(-2)= 1
100
a + b = c
solve for b
b = c-a
100
x + 12 < 36
solve for x
x < 24
100
What is slope intercept form
y= mx + b
200
What defines a function?
When the x-values do not repeat.
200
If f(x) = -3x - 8, find f(-3).
f(-3)= 1
200
x-c = b
solve for x
x= b + c
200
what correlation is this
no correlation
200
What is point slope form?
y - y1= m (x - x1)
300
Is this a function?
(-1, 1), (2, 0), (3, 1), (3, 2), (4, 5)
No, x values repeat
300
If f(x) = 3(6 - x), find f(-4).
f(-4)= 30
300
2x + a = c
solve for x
x= (c-a)/2
300
find slope (-5, 2) (-4, 5)
m = 1/3
300
What is standard form
Ax + By = C
400
Give the domain and range of the following : (-1, 1), (2, 0), (3, 1), (3, 2), (4, 5)
Domain: -1, 2, 3, 3, 4,
Range: 1, 0, 1, 2, 5,
400
Given f(x) = 5 - 9x; Find f(8)
f(8)= -67
400
(x + b)/a = C
solve for x
x = ac- b
400
Is it a function ?
no
400
what is the slope and y-intercept of: y= 2x + 5/3
slope- 2
y-int- 5/3
500
Given a graph, what test do we use to see if it is a function or not?
Vertical Line Test
500
Given f(x) = -2(12-2x) find f(-5)
f(-5)= -64
500
(-x-b)/2= c
solve for X
x = -(2c+b)
500
-2x - 12< -4x + 30
find x
x < 21
500
What was the original point in y + 3= 2(x - 5)
(5, -3)