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raketka [301]
3 years ago
5

Determine whether the graphs of y =-9x+12 and y=1/3x-12 are parallel, perpendicular, coincident

Mathematics
1 answer:
notka56 [123]3 years ago
8 0

1) graphs y = -9x + 12 and y = 1/3x - 12 are not coincident.

2) The graphs are not parallel, because the angular coefficients are not equal

3) The condition of perpendicularity:

k_1\cdot k_2=-1, where k_1=-9;~~~ k_2=\frac{1}{3}


(-9)\cdot\frac{1}{3}=-3\ne -1 - not perpendicular

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