Posted by **Sheretha** on Saturday, August 2, 2008 at 2:19pm.

Decide whether the pair of lines is parallel, perpendicular, or neither.

5x+4y=10

4x+5y=3

- Math -
**DrBob222**, Saturday, August 2, 2008 at 2:27pm
Put both equations in the form of a straight line which is y = mx + b and determine m for each line. If m is the same, the lines are parallel.

- Math -
**Damon**, Saturday, August 2, 2008 at 2:28pm
y = -(5/4)x + 10/4

and

y = -(4/5)x + 3/5

not the same slope because -5/4 is not -4/5

not perpendicular because -(5/4)/-(4/5) is not -1 (it is +1)

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