SSAT Upper Level Math : How to find out if lines are parallel

Study concepts, example questions & explanations for SSAT Upper Level Math

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Example Questions

Example Question #151 : Coordinate Geometry

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

Possible Answers:

Correct answer:

Explanation:

Parallel lines have the same slope. First, put the given equation in  form to find its slope.

Subtract  from both sides of the equation:

The given line has a slope of , so the correct answer will also have a slope of . This means that the correct answer choice is .

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