Lines
Slope
Intercepts
Forms
Grab Bag
100
Points
What is a line composed of?
100
A constant rate of change
What is slope?
100
Where the line crosses the y-axis
What is the y-intercept?
100
Ax + By = C
What is standard form?
100
All points whose coordinates make the equation true.
What is the graph of an equation?
200
Infinity - it goes on forever in both directions.
What is the length of a line?
200
0 slope.
What is the slope of a horizontal line?
200
The y coordinate of all points on the x axis
What is zero?
200
1x + 0y = 4
What is the standard form of the line x = 4?
200
Make a table of values, plot the points and connect them.
How do you graph a line?
300
Standard, slope-intercept, and point-slope
What are the forms of linear equations?
300
Undefined slope
What is the slope of a vertical line?
300
The x coordinate of all points on the y-axis
What is zero.
300
y = mx + b
What is slope-intercept form?
300
They have the same slope.
What are parallel lines?
400
(0,0), (1, -1), (2, -2), (3, -3) are on this line.
What is y = -x?
400
The change in x between two points on the line
What is run? . . . or what is delta x?
400
Substitute 0 for x and solve for y
How do you find the y-intercept?
400
Start at the y intercept, then use the slope to find a second point on the line.
How do we graph using the slope-intercept form?
400
They have opposite reciprocal slopes.
What are perpendicular lines?
500
(-2, 7), (-1, 7), (0, 7), (1, 7) and (2, 7) are on this line.
What is the line y = 7?
500
Up 3, right 1
How do you graph a slope of 3?
500
Substitute 0 for y and solve for x.
How do you find the x-intercept?
500
It's the easiest method to use for graphing when the equation is in Standard Form.
What is the intercept-intercept method of graphing?
500
(0,0), (1,1), (2,2), (3,3) are on this line.
What is the line y = x?
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