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Example Questions
Example Question #21 : Linear Algebra
Suppose the slope of a line is 5, and the x-intercept is 2. What must be the equation of the line in slope-intercept form?
The slope intercept form is:
The x-intercept of 2 means the point given is:
Substitute this point and the slope to determine the value of , or the y-intercept.
Substitute this value and the slope back into .
The answer is:
Example Question #23 : Slope Intercept Form
Rewrite the following equation to slope-intercept format:
The slope intercept form of a line is:
Subtract from both sides.
Divide by 9 on both sides.
The answer is:
Example Question #21 : Linear Algebra
Rewrite the following equation in slope-intercept form:
The slope-intercept form of a line is:
Subtract from both sides.
Simplify both sides.
Divide by negative nine on both sides.
The equation is:
Example Question #21 : Slope Intercept Form
Rewrite the equation in slope-intercept form.
The slope-intercept form is:
Rearrange this equation. Subtract from both sides.
Divide by negative two on both sides.
The answer is:
Example Question #22 : Linear Algebra
Write the equation in slope-intercept form:
The slope intercept form is:
Add on both sides.
Divide by 12 on both sides.
Reduce the fractions.
The answer is:
Example Question #23 : Linear Algebra
Which of the following represents a linear equation in slope-intercept form?
Which of the following represents a linear equation in slope-intercept form?
Slope intercept form is commonly written as:
Where m is our slope and b is our intercept. Note that m and b can be negative.
Now, we are asked to find the equation which is in slope intercept form. This means, we want an option which looks like the above form.
First, rule out anything that isn't linear. Linear equation describe a straight line, whereas other equations may be curved.
Is a quadratic equation, so it is not our answer
Is not linear either, it is a reciprocal function.
Thus, we are left with:
Of these, only the second is in the correct form. The first could be rearranged to be in slope-intercept form, but it is not currently.
So, our answer is:
Example Question #24 : Linear Algebra
What is the slope of the line ?
Start by rewriting the equation in slope-intercept form.
Recall that in the slope intercept form, , is the slope. For the given equation, . The slope must be .
Example Question #22 : Linear Algebra
What is the y-intercept in the following linear equation?
To find the y-intercept, we must have our linear equation in slope-intercept form:
, where represents the y-intercept
Our equation is already in this form:
Therefore, our y-intercept is
Example Question #31 : Slope Intercept Form
What is the slope in the following linear equation?
The slope of the line is apparent when we have our equation in slope-intercept form
, where is the slope
Put into slope-intercept form
1) (divide each piece by )
2)
Therefore, as this equation corresponds with , we have our slope given as
Example Question #32 : Slope Intercept Form
Which linear equation is in slope-intercept form?
The slope-intercept form of a linear equation is represented as:
The choice that corresponds to this form is:
where and
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