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1/2/18 Unused Vocabulary
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Gravity
Key Concepts:
Terms in this set (83)
Variable
A letter used to represent one or more numbers.
Additive Identity Property
The sum of a number and zero is always that number. For example, a + 0 = a.
Multiplicative Identity Property
A number times one equals itself. For example, a X 1 = a.
Multiplicative Property of Zero
Any number multiplied by 0 is 0. For example, a X 0 = 0.
Horizontal
Going side-to-side, like the horizon.
Parallel to the horizon.
Vertical
In an up-down position. Upright.
Example: trees grow in a __________ direction.
Inverse
Opposite. The reverse of.
Per
To divide by
Multiplicative Inverse Property
To multiply by a numbers reciprocal. ex: x * 1/x = 1
Additive Inverse Property
To add a numbers opposite. ex: x + (-x) = 0
Absolute Value
Measures the distance a number is away from 0. |-4| or |4| = 4.
Arithmetic Sequence
A pattern in which each term is found by adding the same number to the previous term.
Common Difference
The number that is being multiplied to each term in an geometric sequence.
Common Ratio
The number that is being added to each term in an arithmetic sequence.
Credit
A value above "0." The amount added to a savings or checking account.
Debt
An amount of money that is below zero or loss.
Dependent Event
The probability that the outcome or occurrence of the first event affects the outcome or occurrence of the second event so that the probability is changed. An example.... drawing a Reese's from a candy jar filled with 10 different candy bars will effect the probability of drawing another Reese's candy bar.
Geometric Sequence
A pattern in which each term is found by multiplying the previous term by the same number.
Independent Event
The probability that one event occurs in no way affects the probability of the other event occurring. An example... Flipping a coin and rolling a number cube.
Integer
a positive or negative whole number; a number that is not a fraction.
Loss
An amount that has been taken away or decreased. Usually referred in terms of money. Another word for debt.
Negative
Any number less than "0".
The "nth" term
The answer to the "x" position in a number sequence. For example the 5th position in the sequence 2, 4, 6, 8, 10, 12.... is 10 since it is the 5th number in the sequence.
Pattern
A number sequence that follows a given rule, for example: 2x = 2, 4, 6, 8...... the rule is which ever number in the sequence you are on, multiply it by 2.
Profit
An amount of something gained. Usually used in terms of money. The amount of Credit above "0."
Scientific Notation
A method of expressing numbers in terms of a decimal number between 1 and 10 multiplied by a power of 10. For example: 10,492 is written as 1.0492 × 10 to the 4th power.
Sea Level
The level of the ocean's surface, used in reckoning the height of geographical features such as hills or the ocean floor. (20 feet below, -20 feet).
Standard Form
A way of writing down very large or very small numbers easily, usually referring to the answer of a scientific notations number written out.
Term
A single number or variable, or numbers and variables multiplied together. ______ are separated by + or − signs.
2x + 4 = 7 would have three of this vocabulary word.
Coefficient
A number that is being multiplied by a variable. 2x + 4 = 7..... the "2" is this vocabulary word.
Pi
The distance around the circle divided by the distance across the circle: 22 / 7.
Circumference
The length around a circle: 2 × π × radius OR π x d
Area of a Circle
The measurement of the amount of space inside a circle: π x r x r
Radius
Half the distance across a circle: d / 2
Diameter
The distance across a circle: 2r
Perimeter
the measured distance around a closed figure.
Surface Area
Sum of all the areas of a 3 dimensional shape.
Ratio
The comparison of two quantities (numbers). There are three ways to display this term: 3 to 1, 3:1, 3/1.
Rate
A ratio that compares two quantities measured in different units.
Outlier Data
Numbers in a set of data that are much more or much less then the rest of the data. Example:
1, 34, 28, 33, 35, 29, 25, 100.
The answers would be: 1 and 100.
Area
The measure of the inside of a surface of a shape.
Discount
Percent off an Item (Money)
Tip
percentage added to the total bill of a meal
Sales Tax
percentage added to the total purchase, usually less than 7%
Quantity
A specific amount or number that represents how much of something you have.
Interest
The amount of money paid or earned in addition to the money borrowed or saved.
Reflection over x axis
Flip over the x-axis by counting to x-axis
A(-2, 4) to A'(-2,-4)
Reflection over y axis
Flip over the y-axis by county to y-axis
C(-2,0) to C'(2,0)
Clockwise
To rotate the direction a clock would.
Counterclockwise
To rotate the opposite direction a clock would.
Rotation 90 degrees clockwise
Turning to the next quadrant clockwise
Ex. Moving from Quadrant II to Quadrant I
B(-2,8) to B'(8,2)
Rotation 90 degrees counterclockwise
Turning to the next quadrant counterclockwise
Ex. Moving from Quadrant III to Quadrant IV
C(-7, -3) to C'(3,-7)
Rotation 180 degrees
Turning two quadrants in either direction.
Scale Factor
The number by which you multiply the ordered pairs
Coordinate Plane
X-axis
Y-axis
Ordered Pairs
The (x , y) coordinates on a Coordinate Plane.
Quadrant I
Top Right Quadrant
Quadrant II
Top Left Quadrant
Quadrant III
Bottom Left Quadrant
Quadrant IV
Bottom Right Quadrant
Translation
Sliding a figure on a coordinate plane. The orientation of the figure stays the same.
Dilation with scale factor less than 1
Decreasing the size of Triangle B by 2/3. The orientation of the triangles stays the same.
Dilation with scale factor greater than 1
Increasing the size of Triangle S by 1.5 or one and a half times larger. The orientation of the triangles stays the same.
Equilateral Triangle
All sides are congruent.
Isosceles Triangle
Two sides are congruent.
Right Triangle
Composed of two acute angles and a 90 degree angle. Use Pythagorean Theorem to find the length of the sides.
Square
Four congruent sides and four right angles.
Rectangle
Two sets of congruent sides. Opposite sides are congruent. Four right angles.
Parallelogram
Two sets of congruent sides. Opposite sides are congruent. Composed of two triangles and a rectangle.
Rhombus
Four congruent sides.
Circle
360 degrees.
Semicircle
Half a circle. 180 degrees.
Independent Variable
-the "x"
-the variable that you change
Dependent Variable
-the "y"
-the variable that is affected by the change
Domain
-the set of "x" values for the function
(input)
Range (functions)
-the set of "y" values for the function
(output)
Input Value
-the x value plugged into the function rule
(days)
Output Value
-the y value plugged into the function rule
($)
Hypotenuse
Across from the right angle. The LONGEST side of the right triangle.
Represented by C in the Pythagorean Theorem.
Leg
The two sides that make the right angle. Both shorter sides. Represented by A and B in the Pythagorean Theorem.
Pythagorean Theorem
The sum of the perfect squares of the two short legs of a right triangle equa
in a right triangle the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the legs A²+B²=C²
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