Algebra II : Graphing Linear Functions
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Example Question #11 : Graphing Linear Functions
Select the equation of the line perpendicular to the graph of 
None of these.
Lines are perpendicular when their slopes are the negative recicprocals of each other such as 
Subtract the x variable from both sides:
Divide by 4 to isolate y:
The negative reciprocal of the above slope: 
Example Question #11 : Graphing Linear Functions
Where does 
To find where this equation crosses the 
Subtract to isolate 
Divide both sides by 
This form is the slope intercept form 
Example Question #851 : Algebra Ii
Find the 
To find the x-intercepts, remember that the line is crossing the x-axis, and that y=0 when the line crosses the x-axis.
So plug in y=0 into the equation above.
To find the y-intercepts, remember that the line is crossing the y-axis, and that x=0 when the line crosses the x-axis.
So plug in x=0 into the equation above.
Example Question #34 : Linear Functions
Find the slope of the line that passes through the pair of points. Express the fraction in simplest form.
Slope is the change of a line. To find this line one can remember it as rise over run. This rise over run is really the change in the y direction over the change in the x direction.
Therefore the formula for slope is as follows.
Plugging in our given points
Example Question #11 : Graphing Linear Functions
Which of the following equations passes through 
Since the line goes through 
Since we are looking for parallel lines, we need to write the equation of a line that has the same slope as the original, which is 
Slope-intercept form equation is 
Therefore,
Example Question #42 : Linear Functions
Write an equation of the line passing through 
Reminder: Slope-Intercept form is 
Step 1: Find the Slope
Step 2: Find the y-intercept
Use the slope and a point in the original y-intercept
Step 3: Write your equation
Example Question #41 : Linear Functions
Find the slope-intercept form of an equation of the line that has a slope of 
Since we know the slope and we know a point on the line we can use those two piece of information to find the y-intercept.
Example Question #12 : Graphing Linear Functions
Determine the slope of a line that has points 
Slope is the change of a line. To find this line one can remember it as rise over run. This rise over run is really the change in the y direction over the change in the x direction.
Therefore the formula for slope is as follows.
Plugging in our given points
Example Question #18 : Graphing Linear Functions
What is the equation of the line passing through (-1,4) and (2,6)?
To find the equation of this line, first find the slope. Recall that slope is the change in y over the change in x: 
Example Question #2 : Graphing Linear Functions
An individual's maximum heart rate can be found by subtracting his or her age from 
In 
We are looking for a graph with a slope of -1 and a y-intercept of 220.
The slope is -1 because as you grow one year older, your maximum heart rate decreases by 1.
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