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Math B Regents Exam Set 1
Math B Regents Exam Flashcards Set 1
12
Mathematics
11th Grade
05/14/2008

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Cards

Term

If you are asked about....

Arc Length,

what formula would you use?

Definition

s = θr

where 

s is arc length

θ is the angle in RADIANS

r is the radius 

Term
If you are asked about the "nature" of the roots of a quadratic equation, you would use ...
Definition

the discriminant

b2-4ac

 

the a, b and c come from the standard form for a quadratic

ax2 + bx + c = 0 

Term
The slopes of parallel lines are...
Definition
the same!
Term
The slopes of perpendicular lines are...
Definition

negative reciprocals.

(they would multiply to be -1)

For example:

½ and -2
Term
How many radians are in 360 degrees?
Definition
2 π (2 pi) radians or 6.28 radians
Term
What is cos60°?
Definition
½
Term

What do you write when you see the words...

inverse variation? 

Definition
xy = k
Term

Here is the general form of a sine equation

y = a sin bx

What is the amplitude?

What is the frequency?

What is the period? 

Definition

y = a sin bx

amplitude = a

frequence = b

period = [image]

Term

What is the first thing you do to solve an absolute value equation, such as

[image]

Definition

Write two equations (2 bars, 2 equations)

[image]

Term

How do you find the x - coordinate

of the vertex of a parabola

This is also known as

the equation of the line of symmetry?

Definition
[image]
Term

How do you find the sum of the roots

of a quadratic equation?

ax2+bx+c=0

Definition

the sum of the roots is

[image]

Term

How do you find the product of the roots

of a quadratic equation?

ax2+bx+c=0

Definition

The product of the roots is

[image]

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