Vocabulary
The number in front of a variable in a term
What is a coefficient
2x + 3x + 3
3(2a - 6) = 36
What is a= 9
1/3x - 4 = 12
What is add 4 to both side
-2a - 8 = 12 + 8a
What is a = -2
a math phrase that includes numbers, letters and operations signs but no equal sign
What is an expression
4(x+2) - 2x +5
What is 2x + 13
-8 + 9m - 4 - 3m = 6
What is m= 3
DOUBLE JEOPARDY (double points)
4(x-2) + x -4x =-8
4x-8 + x - 4x = -8
Your correct answer should include the next step AND what the next line should look like
What is combine like terms
4x + 1x -4x = 5x - 4x
so
1x -8 = -8
-2x + 1 -5x = -5 + 7x
x = 3/7
A constant or a variable in an expression
What is a term
5x - 3x + 2(x +6) - 6
What is 4x + 6
24 - 2(4p + 8) = 56
What is p = -6
-3x + 4 = -x -12
What is add 3x to both sides.
*Note: This is not the only correct answer, but it is the one we discussed most in class. (-3 is a smaller coefficient that -1)
4n - 40 = 7(-2n + 2)
n = 3
3x and 15 x or
2y2 and 27y2 or
23 and -12
What are like terms
1p + 1p + 2t + 3t+ 1p + t -36 + 32
What is 3p + 6t - 4
6x -2(15 - 2x) = 10
x =4
1 - x + 12 + 2x = 4
13 + x = 4
What is subtract 13 from both sides
3( 1 - 3x) = 2(-4x + 7)
x = -11
a letter that represents an unknown value
What is a variable
2x + 2x2 + 3x2 + 4x - 16 + 22 -3x2 - 5x
What is 1x + 2x2 + 6
-8n + 4(1 + 5n) + 6n = -14
What is n= -1
4(x - 2) + 3x = 20
Distribute 4 to x and -2
-3(x - 1) + 8(x - 3) = 6x + 7 - 5x
x= 7