Definitions
What do you call an mathematical statement that does not contain an equals sign?
An expression.
(x-7)/2 = -3
x = 1
Solve for x.
yx + z = w
x = (w - z)/y
Slope
What is Ms. Drake's favorite Christmas color?
Red
To "evaluate" an equation, we use the order of operations. What do we use to "solve" an equation?
The INVERSE order of operations.
-5(3x + 4) = -35
x = 1
Solve for b.
A = bh/2
b = 2A/h
Write the equation for the following sequence:
100, 89, 78, 67...
A = 100 - 11(n-1) or
A = 111 - 11n
What is Ms. Drake's favorite Christmas movie?
Sleepless in Seattle
What do you call a number that is attached to a variable?
The coefficient.
1 = (w+4)/22
w = 18
Solve for L.
V = LWH
L = V/WH
Find the product of the two fractions:
4/7 x 6/11
24/77
Blue Christmas by Elvis Presley
Equations that have multiple variable are called:
Literal Equations
2x - 12 = 3(x - 4)
x = 0
Solve for c.
a = b/c
c = b/a
Find the area of a triangle whose base is 14 cm and height is 20 cm.
140 cm squared
What is Ms. Drake's favorite stocking stuffer?
Slim Jims
If the variables in an equation represent meaningful quantities, literal equations are also called:
Formulas
-4w + 7 = 2w - 7 + w
w = 2
Solve for y.
Ax + By = C
y = (C - Ax)/B
(-5, -3) and (2, 9)
12/7 or -12/-7
What is Ms. Drake's favorite Christmas tradition?