Set 3 Terms Flashcards
Arithmetic sequence
a sequence of numbers in which each term is obtained by adding a certain number to the previous term
Direct proportion
a relationship between two variables such that their ratio is constant
Vector
an arrow that has magnitude and direction
Collinear
points that lie on the same line
Quadratic equation
a quadratic function in which y = 0. Can be solved by factoring or by using the quadratic formula.
Real number
any number that is not imaginary
Line
extends infinitely in both directions
Least common multiple
the smallest number that is a multiple of two given numbers
Right angle
an angle measuring 90 degrees
Parallel lines
lines within a single plane that, when extended infinitely, will never touch
Slope
the rate of change of a line; change in y over change in x
Quadratic function
an equation of the form y=ax^2+bx+c. It’s graph is a parabola.
Average speed
The average speed of a trip is the total distance traveled divided by the total time elapsed.
Slope-intercept form
a linear equation in the form y=mx+b, where m is the slope and b is the y-intercept
Midpoint
a point halfway between two endpoints
Number line
a one-dimensional graph
Sequence
an ordered group of numbers
Surface area
the sum of the areas of the faces of a three-dimensional solid
Magnitude
the length of a vector
Average
the sum of a list of values divided by the number of terms
Imaginary number
a multiple of i, which is equal to √(-1)
System of equations
a group of two or more equations with two or more variables
Line segment
a part of a line that is bounded by two endpoints and has a finite length
Polynomial
an expression composed of the sum or difference of multiple terms of a coefficient and one or more variables raised to different powers
Plane
a flat two-dimensional surface that extends infinitely in all directions
Irrational number
a number that cannot be expressed as a fraction or ration of two integers. Examples include pi and √2.
Circle graph
also called a “pie chart”. A graph which represents percentages as slices of a circle.
Asymptote
a line which a graph approaches but doesn’t ever reach
Geometric sequence
a sequence of numbers in which each term is obtained by multiplying a certain number to the previous term
Series
a sequence that you take the sum of
