Numbers and Operations
When multiplying or dividing 2 negative rational numbers,
Will the solution be negative or positive?
positive
What is the "goal" when we are solving equations or inequalities?
Isolate variable
Similar shapes have 3 properties, finish the word on the 3rd property.
1. Same Shape
2. Angles are congruent
3. Sides are ______________
proportional
In the slope intercept form y = mx+ b,
What does the "b" represent?
y-intercept
This term is used to describe the distance around a circle.
circumference
Which rational number subset includes all positive counting numbers AND zero.
whole numbers
When solving inequalities, If you add or subtract by a negative, do you switch the sign?
Yes or No
No
What is the formula for scale factor?
Scale Factor = New / Orginial
y = mx + b
When finding slope from a graph, which formula do we use?
m =
rise/run
The term used to describe the distance straight across a circle. From one side to the other, going straight through the center.
Diameter
Write Equation.
Darcy started making and selling parachute bracelets last summer.
She has 12 bracelets left from her summer business. She is able to make 3 bracelets everyday after school. How many days will it take her to make 30 bracelets?
Solve for extra 100 points.
6 days
To isolate the variable, you must do the inverse (opposite) and BALANCE. What is the order you solve?
Reverse Pemdas
The distance between Corpus Christi and Austin is 220 miles. On a map the distance is show to be 10 cm. What does 1 cm represent on the map?
22 miles
An equation of a line is proportional, if it goes through the origin.
y = mx + b
What does b = on ALL proportional equations?
0
If a triangular prism, has an "area of the base" of 15 and a height of 4.
What is the Volume to the triangular prism?
60 cm3
When dividing fractions, you will always "multiply by the reciprocal." What is the 3 word phrase that means "multiply by the reciprocal."
Keep Change Flip
Solve.
-3x + 6 > 18
x > -4
2 triangles are proportional.
triangle 1 (original) has a side of 2.
triangle 2 (new) has a corresponding side of 16.
What is the scale factor?
8
y = mx + b
What is the formula to find slope from a table?
m =
change of y / change of x
If a circle has a diameter of 10, what is it's area?
Use pi = 3
75cm2
What are the 3 subsets that are included in the Rational number category?
Integers, whole numbers, natural numbers
Terry recieved a birthday gift of 10 authentic sand dollars from the beach. Terry wanted to grow her collection so he went to the beach everyday to and collected sand dollars. Terry searched everyday until he found 2 sand dollars, and then she would go home. How many days will it take for Terry to have 100 Sand dollars?
Write an equation representing the situation.
Extra $100 Solve.
Solve.
100 = 2x + 10
x = 45
As a project, the challenge science class created a 3D printed model of the SMA gym. The model was proportional to the SMA gym. The 3D printed model (original) was 8 feet and to the SMA gym (new) 160 feet. What scale factor did the challenge science team use?
20
If Adam's mom deposited $50 in Adam's lunch account, and Adam used $3 per day for lunch, write an equation to represent the situation and then graph it.
y = -3x + 50
For this question, pi = 3
Andrew build a circular wrestling ring for his pet lizards to use. If the diameter of the ring is 14 cm, What is the distance around the ring?
42 cm