How to find out if lines are parallel - High School Math
Card 0 of 6
Which of the following lines is parallel to the line 
?
Which of the following lines is parallel to the line
Parallel lines have the same slope. In slope-intercept form, 
, 
is the slope.
Here the slope is 
; thus, any line that is parallel to the line in question will also have a slope of 
.
Only one answer choice satisfies this requirement: 
Note: the answer choice 
is incorrect. If put into 
form, the equation becomes 
. Therefore the slope is actually 
, not 
.
Parallel lines have the same slope. In slope-intercept form,
Here the slope is
Only one answer choice satisfies this requirement:
Note: the answer choice
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Which of the following lines is parallel to 
?
Which of the following lines is parallel to
Two lines that are parallel have the same slope. The slope of 
is 
, so we want another line with a slope of 
. The only other line with a slope of 
is 
.
Two lines that are parallel have the same slope. The slope of
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Which of these lines is parallel to 
?
Which of these lines is parallel to
Lines are parallel if they have the same slope. In standard 
form, 
is the slope.
For our given equation, the slope is 
. Only 
has the same slope.
Lines are parallel if they have the same slope. In standard
For our given equation, the slope is
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Which of these lines is parallel to 
?
Which of these lines is parallel to
Lines are parallel if they have the same slope. In standard 
form, 
is the slope.
For our given equation, the slope is 
. Only 
has the same slope.
Lines are parallel if they have the same slope. In standard
For our given equation, the slope is
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Which of the following lines will be parallel to 
?
Which of the following lines will be parallel to
Two lines are parallel if they have the same slope. When a line is in standard 
form, the 
is the slope.
For the given line 
, the slope will be 
. Only one other line has a slope of 
: 
Two lines are parallel if they have the same slope. When a line is in standard
For the given line
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Are the following lines parallel?
Are the following lines parallel?
By definition, two lines are parallel if they have the same slope. Notice that since we are given the lines in the 
format, and our slope is given by 
, it is clear that the slopes are not the same in this case, and thus the lines are not parallel.
By definition, two lines are parallel if they have the same slope. Notice that since we are given the lines in the
Compare your answer with the correct one above