All Algebra 1 Resources
Example Questions
Example Question #171 : Equations Of Lines
What is the slope of the line ?
To easily find the slope of the line, you can rearrange the equation to the form. To do this, isolate the
by moving the
to the other side of the equation. This gives you
. Then, divide both sides by 3 to isolate the
, which leaves you with
. Now, the equation is in the
form, and you can easily see that the slope is 3.
Example Question #11 : How To Find Slope Of A Line
What is the slope of the line depicted by the equation?
The equation is written in standard from: . In this format, the slope is
.
In our equation, and
.
Example Question #173 : Equations Of Lines
Find the slope of the line defined by the equation .
The slope is the coefficient of :
Example Question #81 : Slope And Line Equations
Find the slope of the line that includes points and
.
Use the slope formula:
Example Question #421 : Functions And Lines
Find the slope of the line that includes points and
.
Use the slope formula:
Example Question #173 : Equations Of Lines
Line is a straight line that passes through these points on a graph:(-4,0) (0,3) and (4,6). What is the slope of 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 divided by the change in
. To calculate the change in value, we use subtraction. So,
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 #13 : How To Find Slope Of A Line
The following equation describes a straight line.
Identify the slope and y-intercept of the line.
None of these
Slope:
Y-intercept:
Slope:
Y-intercept:
Slope:
Y-intercept:
Slope:
Y-intercept:
Slope:
Y-intercept:
The general formula of a straight line is , where
is the slope and
is the y-intercept.
To evaluate our original equation, we can compare it to this formula.
The slope is and the y-intercept is at
. Since the y-intercept is a point on the line, it is written as
.
Example Question #174 : 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 #14 : How To Find Slope Of A Line
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, is the slope and
is the y-intercept. Looking at our given equation, we can see that
and
.
Since the y-intercept is a point, we want to write it in point notation:
Example Question #15 : How To Find Slope Of A Line
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 . Before we can determine the slope and y-intercept, we need to write the equation explicitly in terms of
by solving for
.
First, add to both sides.
Then subtract to both sides.
Finally, divide by .
Now that the equation is explicitly in terms of , we can compare it to the general formula of a straight line in slope-intercept form.
In this equation, is equal to the slope and
is equal to the y-intercept. Comparing our given equation to the formula, we can see that
and
.
Since the y-intercept is a point, we will want to write it in point notation: .
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