Algebra 1 : Functions and Lines
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Example Questions
Example Question #421 : Functions And Lines
Find the slope of the line that includes points 
Use the slope formula:
Example Question #422 : Functions And Lines
Line 
There is no straight line that passes through these three points.
To calculate the slope of a line, we pick two points, and calculate the change in 
slope = 
So we can pick any two points and plug them into this formula. Let's choose (0,3) and (4,6). We get
Example Question #423 : Functions And Lines
The following equation describes a straight line.
Identify the slope and y-intercept of the line.
Slope:
Y-intercept:
Slope:
Y-intercept:
Slope:
Y-intercept:
Slope:
Y-intercept:
None of these
Slope:
Y-intercept:
The general formula of a straight line is 
To evaluate our original equation, we can compare it to this formula.
The slope is 
Example Question #176 : Equations Of Lines
Find the slope of the line defined by the equation 
Rewrite in slope-intercept form:
The slope is the coefficient of 
Example Question #424 : Functions And Lines
Identify the slope and y-intercept of the following function.
Slope:
Y-intercept:
Slope:
Y-intercept:
Slope:
Y-intercept:
Slope:
Y-intercept:
Slope:
Y-intercept:
Slope:
Y-intercept:
This function describes a straight line. We can compare the given equation with the formula for a straight line in slope-intercept form.
In the formula, 
Since the y-intercept is a point, we want to write it in point notation:
Example Question #425 : Functions And Lines
Determine the slope and y-intercept of the following equation.
Slope:
Y-intercept:
Slope:
Y-intercept:
Slope:
Y-intercept:
None of these
Slope:
Y-intercept:
Slope:
Y-intercept:
You see that this equation is not written explicitly in terms of 
First, add 
Then subtract 
Finally, divide by 
Now that the equation is explicitly in terms of 
In this equation, 
Since the y-intercept is a point, we will want to write it in point notation: 
Example Question #90 : Slope And Line Equations
There are two points: 
If these points are connected by a straight line, what is the slope of this straight line?
To determine the slope, we use the following formula.
In the formula, the two points making up that slope are 
The slope is 
Example Question #426 : Functions And Lines
Find the slope of the line that passes through the points (0,2) and (5,-2).
To find the slope of the line passing through the given points, we need to find the change in y and divide it by the change in x. This can also be written as 
Example Question #92 : Slope And Line Equations
Find the slope of the line using the following given points:
(2,5), (5,6), (8,7)
To find the slope, divide the change in 
So,
Check your answer by using the same equation on another pair of points:
It's the same! So the answer is 
Example Question #427 : Functions And Lines
What is the y-intercept of the line
To easily determine an equation's y-intercept, convert it to the 
Converting the given equation to this form gives you
with a y-intercept of 
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