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If the lines 4y+2x = 5 and 3y +ax = 2 are perpendicular, what is the value of a ? I need help! @Shido88
 one year ago
 one year ago
If the lines 4y+2x = 5 and 3y +ax = 2 are perpendicular, what is the value of a ? I need help! @Shido88
 one year ago
 one year ago

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fantastic4100Best ResponseYou've already chosen the best response.0
@BluFoot please help
 one year ago

BluFootBest ResponseYou've already chosen the best response.2
OK first solve for y in both those equations so they're both in the form of y=mx+b
 one year ago

BluFootBest ResponseYou've already chosen the best response.2
Do that and let me know what you get
 one year ago

Shido88Best ResponseYou've already chosen the best response.0
y= 1/2x 5/4 and y=2/3x2/3 and what else?
 one year ago

BluFootBest ResponseYou've already chosen the best response.2
You should get y=1/2 x 5/4 and y=a/3 x 2/3 Now you want them to be perpendicular. This means that one slope is the negative reciprocal of the other. Slope of first = 1/2 Negative reciprocal of first = 2/1 = 2 Slope of second = a/3 So: 2 = a/3 6 = a a=6 So slope of second = a/3 = (6)/3 = 6/3 = 2 So second line is y = 2 x 2/3
 one year ago
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