13
Thirteen
Solve:
x + 4 = 9
x = 5
How many equations are in a system of equations?
Two
Example:
y = x +3
2x + y =12
What is a negative times a negative?
Positive
What are the 4 math operations?
addition, subtraction, multiplication, division
Say this number:
67
Sixty Seven
Solve:
y - 12 = 1
y = 13
What do you have to find when solving a system of equations?
X and Y
What is slope?
-rise over run
-how steep something is
-change
What is the verb for multiplication?
Say this number:
396
Three hundred and ninety six
Solve:
2x + 3 = 11
x = 4
What are the 3 ways to solving a system of equations?
Substitution
Elimination
Equal Values
What is 3 - -3 ?
6
If you don't want to use the "x" for multiplication, what can you use?
.
( )
Say this number:
3,009
Three thousand and nine.
Solve:
15 + 6x = 45 + 8x
x = -15
Solve and name the best method to use:
y=6
3y = x
y = 6
x = 18
Substitution Method
What can you do to start this problem? What is the word to describe this?
2(x +3) =10
Distribute
What do you do first in the expression?
2+3 *5
Is it 2+3 or 3*5?
3*5
Say this number:
673, 913
Six hundred seventy three thousand, nine hundred and thirteen
Solve:
5(x+4) = 6x -5
x = 25
Solve and name the best method to use:
y = x-1
y = 2x + 2
x = -3
y = -4
What is the equation for the story?
Mr. Yang has 10 dollars. He gets 5 dollars every day.
y = 5x + 10
What is
2 - 4 * 3 = ?
-10