Relations and Functions
Writing Linear Equations
Scatterplots
Special Functions
Slope
100
In a relation (a set of ordered pairs) all of the x values. In a function, what x can be.
What is the domain?
100
An equation whose graph is a line
What is a linear equation?
100
When points on a scatterplot approximate a linear relationship, this is the line we can draw.
What is a best-fit line or line of best fit?
100
y = x
What is an identity function?
100
vertical change over horizontal change or the change in y over the change in x
What is slope?
200
In a relation (a set of ordered pairs) all of the y values. In a function what y can be.
What is the range?
200
The variable whose value depends on the independent variable.
What is the dependent variable?
200
An equation we write of the best-fit line that predicts what other values of y will be for given values of x.
What is a prediction equation?
200
y = 2
What is a constant function?
200
The slope of a line parallel to y=3x +4
What is 3?
300
A function that is just a set of points.
What is a discrete function?
300
The standard form of a linear equation.
What is Ax + By =C
300
Scatterplots are used to show this.
What is correlation?
300
For the relation (3, -4), (7,2) and (-8,9) , 3, 7 and -8.
What is the domain of the relation?
300
The slope of a line perpendicular to y = 1/3x +4
What is -3?
400
A test used to determine if a relation is a function.
What is the vertical line test.
400
y = a number
What is a horizontal line, or a constant function.
400
This function is is a v-shape in quadrants I and II.
What is an absolute value function?
400
The slope of 3x-4y = 17
What is -3/4?
500
When the domain of a relation is infinite and can be graphed with a line or a smooth curve.
What is a continuous function?
500
The y-coordinate of the point at which a graph crosses the y-axis (when x = 0)
What is the y-intercept?
500
For the relation (9,0), (-16,7) and (3,2), 0,7 and 2
What is the range?
500
This kind of function looks like stair steps
What is a step function?
500
The y- intercept of an equation in slope-intercept form (y= mx + b)
What is b?
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