Module 1 - Test 1 Flashcards
(47 cards)
What is a Real number?
Has a point and can be plotted on a number line
What is an Integer?
Whole number and its opposite
What is a digit?
Numbers from which the numerals are made
What is a radical?
Involves a square root, cube root, etc of an integer
What is a variable?
A letter which stands for an unspecified number from a given set
What is an expression?
A collection of variables and constants connected by operation signs (+, -, x, /, etc)
What is an absolute value?
The difference between the number and zero on the number line. It’s denoted by two vertical lines | |
What are terms?
Numbers that are added to each other or subtracted from each other
What are factors?
Numbers that are multiplied together
In the expression x to the y, what is x?
The base
In the expression x to the y, what is y?
The exponent
What is the expression x to the y called?
A power
Solve a + b = c for b
b = c - a
Solve U + P =V for U
U = V - P
Solve 0.25 = n - 1 for n
n = 1.25
Solve f = 1 / D for D
D = 1 / f
Solve Prism = Lens Power x OC for Lens Power
Lens Power = Prism / OC
In a rectangular coordinate system, what is the x axis called?
Abscissa
In a rectangular coordinate system, what is the y axis called?
Ordinate
In a rectangular coordinate system, what are the two axes called?
Horizontal axis
Vertical axis
Both together are coordinate axes
What are the 4 regions of a rectangular coordinate system called?
Quadrants
What is the point of intersection between two axes called?
Origin
What is an ordered pair?
Two numbers corresponding to a single point on a graph
Calculate f(m) for a lens whose power is +3.00 D
f(m) = 1 / P(D) f(m) = 1 / 3.00 f(m) = 0.333 m = 33.3 cm
