document.write( "Question 207926: If two lines have different slopes and the same y-intercepts, how many points of intersection are there? \n" ); document.write( "

Algebra.Com's Answer #157275 by Theo(13342) $\"\"$ $\"About$

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always two line will intersect only once.
\n" ); document.write( "if they have the same y intercepts then that is their point of intersection.
\n" ); document.write( "example:
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\n" ); document.write( "y = -2x + 3
\n" ); document.write( "y = 1/2x + 3
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\n" ); document.write( "these lines are perpendicular because their slopes are negative reciprocals of each other.
\n" ); document.write( "as can be seen on the graph, their only point of intersection is at the y intercept.
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