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Graphs of functions
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the opposite operation used to work backwards in a function
inverse operation
a model used to show how a function changes an input into an output
function machine
the direction of decreasing numbers on an axis
negative direction
the direction of increasing numbers on an axis
positive direction
going across from left to right
horizontal
going up and down
vertical
the heading that tells what the graph is about
title
a guide that explains symbols, colours, or markings on a graph
key
a word or phrase used to identify an axis or part of a graph
label
data that can take any value within a range
continuous data
a smooth line drawn to show the general pattern of data
curve of best fit
a sign used in maths, such as +, −, ×, ÷, or =
symbol
a group of numbers, symbols, or variables showing a value
expression
a number sentence showing that two expressions are equal
equation
a repeated or predictable way numbers change
pattern
a value that does not change
constant
to go down in value
decrease
to go up in value
increase
the set of possible output values
range
the set of possible input values
domain
the point where a graph crosses an axis
intercept
a bent line on a graph showing a changing relationship
curve
a graph that forms a straight line
linear graph
the connection between two sets of values
relationship
the value that changes because of the independent variable, usually shown on the y-axis
dependent variable
the value you choose or change, usually shown on the x-axis
independent variable
a symbol, usually a letter, that stands for a number
variable
two numbers written in brackets to show a point, such as (2,3)
ordered pair
a chart showing inputs and their matching outputs
table of values
a way of showing how inputs are connected to outputs
mapping
the pattern or operation used in a function
rule
the value that comes out of a function
output
the value that goes into a function
input
a rule that matches each input with exactly one output
function
a graph that uses bars to compare amounts
bar graph
a graph that uses points joined by lines to show change
line graph
the flat surface formed by the x-axis and y-axis
coordinate plane
one of the four sections of a coordinate plane
quadrant
a reference line on a graph, such as the x-axis or y-axis
axis
the equal spaces between numbers on a scale
interval
the numbers or intervals used on the axes of a graph
scale
a diagram used to show information or relationships
graph
to place a point on a graph
plot
an exact position marked on a graph
point
the point where the x-axis and y-axis meet, shown as (0,0)
origin
the vertical line on a graph
y-axis
the horizontal line on a graph
x-axis
a pair of numbers used to show the exact position of a point on a graph
coordinate