Math Content Test Flashcards

1
Q

When is a function undefined?

A

When the denominator is equal to zero

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2
Q

What happens with an inverse function?

A

Flip x and y

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3
Q

In y = a(x-h)^2 + k,

If a is negative…

A

Parabola opens downwards

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4
Q

y = a(x-h)^2 + k,

If a is positive…

A

The parabola will open upwards

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5
Q

y = a(x-h)^2 + k,

If k is positive…

A

It will be above the x axis

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6
Q

y = a(x-h)^2 + k,

If k is negative…

A

It will be below the x axis

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7
Q

Cardinality

A

A child can state how many blocks are on the table without recounting them

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8
Q

The distributive law

A

Combines addition and subtraction

a(b+c)=ab+bc

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9
Q

Inverse relationship

A

(x,y) and (x,y)

Both pairs (x times y) must equal the same number

(4,6) and (2,12)

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10
Q

Commutative property

A

Change the order of the numbers

7+5=5+7

9x3=3x9

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11
Q

Distributive property

A

5(2+4) = 5(2)+5(4)

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12
Q

Division as the inverse of multiplication

A

8 x 1/8 =1

5+ (-5) =0

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13
Q

Associative property

A

(4+1)+3 = 4+(1+3)

3x4)x5 = 3 x (4x5

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14
Q

Why is division of a non zero number by zero undefined?

12/0 is undefined

A

Because it is FALSE

0x0 does not equal a non zero number

It implies 0x0=12

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15
Q

How to find a slope in data table

A

Change in y
____________
Change in x

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16
Q

Area of a triangle equation

A

A= 1/2 base x height

17
Q

Volume of a cylinder

A

Area of base x height

18
Q

Area of a circle

A

A= pi x radius ^2

19
Q

Circumference of a circle

A

C=2 pi x radius

OR

C=pi x diameter

20
Q

Congruent

A

Same

21
Q

Isosceles triangle

A

A triangle with two sides of equal length

22
Q

Equilateral triangle

A

Triangle where all 3 sides are equal

23
Q

If two polygons are similar, their ratio of their areas is equal to the

A

Square of the ratio of their perimeters

24
Q

How to find a slope of a line

A

y1-y2
______

x1-x2

25
Q

Multiplicative property of zero

A

5x0=0

26
Q

Scalene triangle

A

Has no equal sides

27
Q

Identity property

A

6+0=6

5x1=5

27
Q

When a pair of numbers is inversed

A

One must double and one divided by 2