Simplifying Expressions
2x + 4 + 5x
7x + 4
4 + 7x
f(x) = 4x + 2
f(3) =
14
2x = -18
x = -9
Which inequalities signs do you use if it is an open circle?
< and >
What are the 3 synonyms for x-values?
Domain
Independent Variable
Input
2(3x - 5)
6x - 15
f(x) = x2 - 4
f(0) =
-4
What is the goal of solving equations?
To get the variable by itself
When do you flip the inequality sign
When you multiply or divide by a negative number
What quadrant would the point (-4, -3) lie in?
III
7x - 4 - 8x
-x - 4
-4 - x
f(x) = 3x2+ 5
f(-2) =
17
5x - 20 = -40
x = -4
5x + 10 > 40
x > 6
What is Superman's weakness?
kryptonite
magic
7 + 4(x - 2)
-1 + 4x
4x - 1
g(x) = 3x2+5x-6
g(-1) =
-8
2x + 6 + 4x = 42
x = 6
3(2x - 8) < 6
x < 5
How many arms does a squid have?
10
-3(5x - 7) + 4x
-11x + 21
21 - 11x
f(x) = 3x + 2 and g(x) = x2 - 4
f(-2) + g(3)
1
5x + 2 - 3x = 4x + 10
x = -4
4x - 6 > 6x - 10
x < 2
2 > x
What values represent the range of a function?
The y-values