Combining Expressions
4 + 8 ?÷ 2 + 6 * 2
20
True or False: (if false provide a counter example):
All real numbers are rational numbers
False … irrational numbers
Write an equation and then find the value for the variable:
One more than the product of a number and two is thirty-one
(2x) + 1 = 31
x = 15
3rd
(2d - 3) ÷ (-5) … when d = 9
d = -3
True or False: (if false provide a counter example):
The absolute value of a negative number is always positive
True
Write an equation and then find the value for the variable:
Twenty-eight is equivalent to four minus the sum of a number and six
4 - (x + 6) = 28
x = -30
y = mx + b
(-8)2 ÷ (-2)
= -32
True or False: (if false provide a counter example):
If a and b are negative numbers, and |a| < |b|, then a - b is positive
True
Write an equation and then find the value for the variable:
The sum of ten and the product of a number and 9 is one hundred
10 + 9x = 100
x = 10
What is the equation to finding the slope when given two points?
y2 - y1 ÷ x2 - x1
(42 - 23)(13 - 32)
= - 64
(-11 / 3) is what types of numbers? (List all that apply)
Rational & Real
Write an equation and then find the value for the variable:
The sum of twice a number and half the number is twenty
(2x + .5x) = 20
x = 8
Find 5 points along the line: 8y = 16 - 24x
As long as they go up or down the slope of -3 from (0,2)
Write an equation and then find the value for the variable:
Three less than some number times five is twenty-two
(5x - 3) = 22
x = 5
0 is what type of number? (List all that apply)
Real, Rational, Integer, Whole
Write an equation and then find the value for the variable:
The perimeter of a flag is 220 inches. What are the dimensions of the flag if the length is three times the width.
220 = 2x + 6x
width = x = 27.5
Length = 82.5
What are the 3 different ways to say "slope"
Rise over Run
Rate of Change
y2 - y1 ÷ x2 - x1 … the slope formula