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VLD [36.1K]
3 years ago
11

How would I know what lines are intersecting, perpendicular, parallel and coinciding based off an equation given? Like in the pi

cture listed.

Mathematics
1 answer:
NikAS [45]3 years ago
8 0
If lines are paralel, then they have the same slope
if the lines are pependicuilar, the slopes mutiply to -1

so

y=mx+b
m=slope

and
ax+by=c
-a/b is the slope

given
y=2/3x-2
slope is 2/3

x+y=4
slope is -1/1 or -1

2/3≠-1 and -1 times 2/3≠-1 so they are neither perpendicular or paralell

since they aren't paralell, we know they intersect somewhere
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(not listed as an option)

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