perpendicular lines: 6x - 3y = 15 and 2y = 4x - 5

line L: 6x-3y=15
line M: 2y=4x-5

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If you are given these lines how would you figure out if they are perpendicular, have the same y-intercept or x-intercept, or parrel. And which would it be? :?
thanks

mathdunce23 said:

If you are given these lines how would you figure out if they are perpendicular, have the same y-intercept or x-intercept, or parrel.

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To determine if lines are parallel (note spelling), perpendicular, or neither, check their slopes.

To find a y-intercept, set x equal to zero and solve.

To find an x-intercept, set y equal to zero and solve.

Have fun!

Eliz.

And...... if their slopes are equal, the lines are parallel, and if their slopes are negative reciprocals (their product is -1), then the lines are perpendicular.