Inverse Operations
What is the inverse operation of Addition
Subtraction
Solving Equations
Solve for x.
3x=63
x=21
Is the circle open or closed ?
Which direction do you shade, left or right?
x< 13.5
open
left
Which inequality symbol would you use if you see the the keywords " at least"
greater than or equal to
What does an inequality must have?
Variable
Inequality Symbol
Constant/ Number
What is the inverse operation of subtraction
Addition
Solving Equations
Solve for x.
x + 2.7= 5.2
x = 2.5
What are two possible solutions for 5y>44
y is greater than 8.8
so solutions can be 8.9, or 9
Which inequality symbol would you use if you see the keywords " no more than"
Less than or equal to
An equation must have an
Equal sign
What is the inverse operation of division
Multiplication
Solve for x
0.8x=8
x = 10
Which symbols require you to use a closed circle to graph
less than or equal to
greater than or equal to
Inequalities only have one solution, just like equations.
False. Inequalities have infinitely many solutions.
x, m, w, r, are all examples of
variables
What is the inverse operation of multiplication
Division
Solving Equations
Solve for x.
x/6 = 18
x = 108
Write an inequality
m is greater than 50
m > 50
We use a closed circle to represent the inequalities < and > ?
False
How do you solve for x.
x + 2.7= 5.2
Subtract 2.7 from both sides of the equation.
Name four mathematical operations
Addition
Subtraction
Mutiplication
Division
Solve for x
1/3x=24
x = 72
Which symbols require you to use an open circle to graph
>, <
Given c + 4 > 14
We use the inverse operation of subtraction to solve the inequality.
TRUE
Mia has a collection of postcards. Last week she bought 12 new postcards and now she has 84 postcards in her collection. Write an equation that represents the number of postcards, x, Mia had last week.
p + 12 = 84
p = 72