# SSAT Upper Level Math : Parallel Lines

## Example Questions

### Example Question #11 : Parallel Lines

Which of the following lines is parallel to the line ?

Explanation:

Parallel lines have the same slope. The slope of a line in slope-intercept form  is the value of . So, the slope of the line  is . That means that for the two lines to be parallel, the slope of the second line must also be .

### Example Question #12 : Parallel Lines

Which of the following lines is parallel with the line with equation ?

Explanation:

Parallel lines have the same slope. The slope of a line in slope-intercept form  is the value of . So, the slope of the line  is  . That means that for the two lines to be parallel, the slope of the second line must also be .

### Example Question #13 : Parallel Lines

Which of the following lines is parallel to the line ?

Explanation:

Parallel lines have the same slope. The slope of a line in slope-intercept form  is the value of . So, the slope of the line  is . That means that for the two lines to be parallel, the slope of the second line must also be .

### Example Question #14 : Parallel Lines

Which of the following lines is parallel to the line with the equation ?

Explanation:

Parallel lines have the same slope. The slope of a line in slope-intercept form  is the value of . So, the slope of the line  is . That means that for the two lines to be parallel, the slope of the second line must also be .

### Example Question #15 : Parallel Lines

Which of the following equations is parallel to the line with the equation

Explanation:

Parallel lines have the same slope. The slope of a line in slope-intercept form  is the value of . So, the slope of the line  is . That means that for the two lines to be parallel, the slope of the second line must also be .

### Example Question #16 : Parallel Lines

Which of the following lines is parallel to the line

Explanation:

Parallel lines have the same slope. Start by putting the given equation in  form to figure out its slope:

Subtract  from each side of the equation:

Divide each side of the equation by :

The slope of both this line and the one parallel to it must be .

### Example Question #17 : Parallel Lines

Which of the following lines is parallel to the line

Explanation:

Parallel lines have the same slope. Start by putting the given equation in  form to figure out its slope.

Divide both sides of the equation by :

Subtract  from both sides of the equation:

Divide both sides of the equation by :

The given line has a slope of , so the answer choice equation needs to have a slope of  as well.

### Example Question #18 : Parallel Lines

Which of the following lines is parallel to the line with the equation

Explanation:

Parallel lines have the same slope. Start by putting the given equation in  form to figure out its slope.

Subtract  from each side of the equation:

Divide both sides of the equation by :

The given line has a slope of , so the answer choice equation will need to have a slope of  as well to be parallel to the given line.

### Example Question #19 : Parallel Lines

Which of the following lines is parallel to the line with the equation ?

Explanation:

Parallel lines have the same slope. Start by putting the given equation in  form to figure out its slope.

Subtract  from each side of the equation:

Divide each side of the equation by  and reduce:

The given line has a slope of , so the answer choice equation will need to have a slope of  as well to be parallel to the given line.

### Example Question #20 : Parallel Lines

Which of the following lines is parallel to the line