It is a relation where each input has only one output.
Function
A variable that you can control or change.
Independent Variable
It is the set of all input values (x-values)
Domain
The set of all output values (y-values)
Range
The steepness of a line/the rate of change. It starts with letter S.
Slope
In the equation, y = 3x + 1, what is the independent variable?
x
In the equation, y=3x + 1, what is the slope?
3
In the equation, y = 3x + 1, what is the y - intercept?
1
In the equation, y = 3x + 1, what is the x - intercept?
⅓
In the equation, y = 3x + 1, what is the dependent variable?
y
What is x - axis?
The horizontal line.
What is y -axis?
The vertical number line.
A linear function is written as _________, where m is the slope and b is the y - intercept.
y = mx + b
What does a positive slope tell you about the graph of a line?
The line goes up/ increasing from left to right
What is the slope of a horizontal line?
zero
How do you determine if a table of values represents a linear function?
Check if the difference of all values are equal.
How do you identify whether an equation defines a linear function?
Check if the degree of the given linear equation is 1.
How do you find the zero (x - intercept) and y - intercept of a linear function?
To find the zero set y = 0 and to find the y-intercept set x = 0.
How do you find the slope of a line using rise over run?
Divide the rise (change in y) by the run(change in x)
How do you determine if a set of ordered pairs represents a function?
Check the first element, if every x value is paired with only one y value, it is a function