Integers
When adding, and they both have the same sign what is the rule?
______ & _______
Add & Keep
What is the equation that represent the constant of proportionality?
k = y/x
orgin (0,0)
what is the percent proportion equation
is(part)/of (whole) = percent/100
You buy 3 notebooks for $6. What is the cost per notebook?
$2
An addition problem, but they have different signs what operation do you then use?
subtraction
What is the equation that represents a proportional relationship?
y=kx
a proportional graph has what type of line?
straight
What number goes in the denominator of the percent proportion?
100
What is a unit rate?
A rate with a denominator of 1
When multiplying two negatives your answer will be?
positive
What is the constant of proportionality with the points (0,0 & (10,50).
5
Is (0,2), (2,4), (4,6) proportional?
no
What is 35% of 240?
84
When finding the unit rate with a whole number what operation do you do?
Divide by the denominator (whole number)
What is the rule for a subtraction?
Keep _____ ______
change change
Does this equation represent a proportional relationship? Why?
y=4x +5
NO. No +5.
What is the ordered pair (4,12) telling us?
x = 4 and y = 12
A $40 shirt is 25% off. What is the sale price?
$30
A graph passes through (5,20). What would the y-value be when x = 8?
32
When dividing a negative number and a positive number, your answer will be?
negative
is the table proportional? what is the constant?
x. y
2. 8
4. 16
5. 20
yes, 4
A graph shows that 4 tickets cost $28. What would 9 tickets cost?
$63
An $80 purchase has 10% tax. What is the total?
$88
When finding the unit rate with a fraction what do you do?