Math Content Test Flashcards
(28 cards)
When is a function undefined?
When the denominator is equal to zero
What happens with an inverse function?
Flip x and y
In y = a(x-h)^2 + k,
If a is negative…
Parabola opens downwards
y = a(x-h)^2 + k,
If a is positive…
The parabola will open upwards
y = a(x-h)^2 + k,
If k is positive…
It will be above the x axis
y = a(x-h)^2 + k,
If k is negative…
It will be below the x axis
Cardinality
A child can state how many blocks are on the table without recounting them
The distributive law
Combines addition and subtraction
a(b+c)=ab+bc
Inverse relationship
(x,y) and (x,y)
Both pairs (x times y) must equal the same number
(4,6) and (2,12)
Commutative property
Change the order of the numbers
7+5=5+7
9x3=3x9
Distributive property
5(2+4) = 5(2)+5(4)
Division as the inverse of multiplication
8 x 1/8 =1
5+ (-5) =0
Associative property
(4+1)+3 = 4+(1+3)
3x4)x5 = 3 x (4x5
Why is division of a non zero number by zero undefined?
12/0 is undefined
Because it is FALSE
0x0 does not equal a non zero number
It implies 0x0=12
How to find a slope in data table
Change in y
____________
Change in x
Area of a triangle equation
A= 1/2 base x height
Volume of a cylinder
Area of base x height
Area of a circle
A= pi x radius ^2
Circumference of a circle
C=2 pi x radius
OR
C=pi x diameter
Congruent
Same
Isosceles triangle
A triangle with two sides of equal length
Equilateral triangle
Triangle where all 3 sides are equal
If two polygons are similar, their ratio of their areas is equal to the
Square of the ratio of their perimeters
How to find a slope of a line
y1-y2
______
x1-x2
