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3 years ago

Please help!! Tell whether the lines for the pair of equations are parallel, perpendicular, or neither.

Mathematics

2 answers:

PilotLPTM [1.2K]3 years ago

6 0

I got parallel
tell me if i get it right

VikaD [51]3 years ago

5 0

If paralell, slopes are same
perpencular, sloes mutiply to -1

neither is neither

the slopes
y=mx+b
m=slope

ax+by=c
-a/b=sloe

given

y=-2/3x+1
slope=-2/3

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

-2/3 and 2/3 aren't equal nor do they multipy to -1

neither
C

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Mila [183]

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Answer:

see below

Step-by-step explanation:

It is easiest to compare the equations when they are written in the same form.

The first set can be written in slope-intercept form.

y = 2x +7

y = 2x +7 . . . . add 2x

These equations are identical, so have infinitely many solutions.

The second set can be written in standard form.

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These equations differ only in their constant, so have no solutions.

The third set is already written in slope-intercept form. The equations have different slopes, so have exactly one solution.

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3 years ago

A car trip from New York to Cincinnati took 12.5 hours. The return trip by the same route took 1 hour longer because the average

zhenek [66]

A car trip from New York to Cincinnati took 12.5 hours. The return trip by the same route took 1 hour longer.

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We know Distance D = speed * time

time = 12.5 hours and speed =x

D = 12.5x

Return trip

The return trip by the same route took 1 hour longer. So 12.5+1 = 13.5 hours

he average rate of speed was 4 mph less. So speed is x-4

Distance D = speed * time

time = 13.5 hours and speed =x-4

D = (x-4)*13.5

D= 13.5x-54

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poizon [28]

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ser-zykov [4K]

Answer:

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Step-by-step explanation:

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3 years ago

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