Glossary

use a given function on some inputs

the inputs to a function; the expressions for each argument follow the function name

A reference line, used to determine the position of a coordinate

a type of data with two values: true and false

a 'sentence diagram' of the structure of a mathematical expression

messages in the code, generally ignored by the computer, to help people interacting with the code understand what it is doing

an inequality that combines two simple inequalities using and or or

a code expression made of questions and answers

a statement of the name, domain, and range of a function

errors where the code makes sense, but uses a function with the wrong number or type of arguments

a number describing an object’s location

a grid formed by a pair of intersecting horizontal and vertical number lines

a structured piece of data in a dataset that typically reports all the information gathered about a given individual

a way of classifying values, such as: Number, String, Image, Boolean, or any user-defined data structure

to find and fix errors in one’s code

to associate a descriptive name with a value

the left-most text box in the Editor where definitions for values and functions are written

a sequence of steps that helps people document, test, and write functions

a measurement of something in a particular direction, especially height, length, or width. The dimensions of a computer screen, for example, are given as width x height.

the type or set of inputs that a function expects

software in which code can be written and evaluated

a mathematical description of the relationship between two variables or quantities, in which they are equal

information from the computer about errors in code

perform the computation in an expression, producing an answer

shows the use of a function on specific inputs and the computation the function should perform on those inputs

a computation written in the rules of some language (such as arithmetic, code, or a Circle of Evaluation)

the flat surfaces on the outside of a solid figure

a relation from a set of inputs to a set of possible outputs, where each input is related to exactly one output

code that names a function, lists its variables, and states the expression to compute when the function is used

a standard way to denote functions, beginning with a function name, such as f or gt, the variable(s) the function takes in, such as x or size, and a definition of what the function does using a formula in terms of the variable. For example, f(x) = x + 1 takes in a number and adds 1.

a diagram (such as a series of one or more points, lines, line segments, curves, or areas) that represents the variation of a variable in comparison with that of another variable.

the side opposite the 90-degree angle in a right triangle

a type of data for pictures

a mathematical description of the relationship between two variables or quantities, in which they are not necessarily equal

the right-most text box in the Editor, where expressions are entered to be evaluated

the set of values that makes both inequalities true

an infinite collection of points forming a straight one-dimensional figure having no thickness and extending infinitely in both directions

sequences that change at a constant rate, or points forming a straight line on a graph

how we refer to a function or value defined in a language (examples: +, *, star, circle)

the point (0,0) where the horizontal and vertical axes intersect

a function that computes different expressions based on its input

a concise, detailed description of what a function does with its inputs

the relationship between the squares of the sides of a right triangle; can be used to find diagonal distances on the coordinate plane

the type or set of outputs that a function produces

the relative sizes of two or more values

a solid figure which has 6 faces, all of which are rectangular

resize an image to be larger or smaller while maintaining ratios and proportions

the steepness of a straight line on a graph

the set of all values or coordinate pairs that will make an equation, inequality, set of equations or set of inequalities true

a data type for any sequence of characters between quotation marks (examples: "hello", "42", "this is a string!")

replace a variable with a value or expression and evaluate or simplify the resulting expression

the sum of the areas of all of the faces of a solid figure (polyhedron) or the total area that the surface of the object occupies

errors where the computer cannot make sense of the code (e.g. - missing commas, missing parentheses, unclosed strings)

a data structure that stores data as rows, with entries in particular columns

the set of values that makes either or both of a set of inequalities true

a specific piece of data, like 5 or "hello"

a name or symbol that stands for some value or expression, often a value or expression that changes

a strategy for determining whether or not a graph represents a function by confirming that no vertical line can be drawn to reveal that an x-value corresponds to more than one y-value

axis on a coordinate plane that runs from left to right

number line on a coordinate plane that runs from bottom to top, indicating values in that direction

the point where a line or curve crosses the y-axis of a graph