Vocabulary
a symbol whose value is not fixed
variable
4x=64
16
2y + 4 = 5
1/2
2x + 4y = 11
y = -1/2x + 11/4
-14 + -65 = x
x = -79
3(b+5) = 4(2b-5)
b = 7
x2 = 25
2 solutions (5 and -5)
a symbol that has a fixed numerical value
constant
12/x = 6
2
8 = 14x - 90
7
A = bh
Solve for h.
h = A/b
What is the P in PEMDAS?
parentheses
8.3z = 4.1z + 10.5
z = 2.5
3x - 5 = 7 + 3x
no solution
to make easier or less complicated
simplify
2 legged cow
what is ur mom
5z+2 = 12
2
8x - 2y = 10
y = -5 + 4x
d=rt
Solve for r.
r = d/t
2(x+4) = -5x + 1
x = -1
x + 2 = x + 7
no solution
a statement that shows how 2 things are equal
equation
14+y=25
11
3z - 12 = 3
5
7 = -y + 3x
y = 3x - 7 (OR -7 + 3x)
4x + 0 = 0
x = 0
1/2s = 4s-21
s = 6
x + 2 = x + 2
infinite solutions
a mathematical phrase with no equal sign
1/3x = 15
45
7x - 12 = 37
7
1/3x + y = 4
y = 4 - 1/3x
1/8x = 15 + -1/7x
x = 56
-2(x - 5) = 6(2 - 1/2x)
x = 2
6x + 4 = 4(3/2x + 1)
infinite solutions