Graphs
A quantity in an equation that stays the same.
What is a constant?
A quantity that depends on another variable.
What is an dependent variable?
82
64
7+x=8
X=1
A quantity in an expression or equation that can change.
What is a variable.
A function whose graph is a straight line or part of a straight line.
What is a linear function?
52+32
34
X-16=2
X=18
The part of a graph that is labeled with values and variables.
What is an axis.
Another word for values of an independent variable.
What is an input? (or an x-value)
62 + 22
40
9x=108
X=12
Part of a graph that is always drawn horizontally.
What is the x-axis.
A rule that assigns each input exactly one output.
What is a function?
122+23
152
2x-13=1
x=7
A graph shows a picture of the relationship between this number of variables.
What is 2?
A function rule that could represent, for instance, this table
x y
0 50
1 49
2 48
What is y = 50 - x
132-72
120
5x+7=22
X=3