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2 years ago

Does the equation y = x represent a function? Explain why or why not.

Mathematics

1 answer:

Sphinxa [80]2 years ago

3 0

Answer:

It represents a function because it consists of x-intercept and y-intercept hence can be plotted.

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2x-y+z=9 x+y-2z=-1 -x+2y+2z=-5

slega [8]

X=3
Y=-2
Z=1

Hope this helps.

3 0

3 years ago

Someone plzzz explain this to me and tell me the answer thanks

kirill115 [55]

What you do is stack the fractions and subtract 9-3 and you get 6 and bring down the 8 and subtract 5-3 and you get 6 6/8

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3 years ago

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A cyclist travels at distance of 400 meters in 120 seconds towards school, calculate his speed. (Show your work)

DochEvi [55]

we know that

The scalar magnitude of the velocity vector is the speed. The speed is equal to

$Speed=\frac{distance}{time}$

in this problem we have

$distance=400\ m \\time=120\ sec$

substitute in the formula

$Speed=\frac{400}{120}$

$Speed=3.5\frac{m}{sec}$

therefore

the answer Part a) is

the speed is equal to $3.5\frac{m}{sec}$

Part b) Find the velocity

we know that

Velocity is a vector quantity; both magnitude and direction are needed to define it

in this problem we have

the magnitude is equal to the speed

$magnitude=3.5\frac{m}{sec}$

$direction=North\ East\ (NE)$

therefore

the answer Part b) is

the velocity is $3.5\frac{m}{sec}\ North\ East\ (NE)$

Part c)

we know that

the acceleration is equal to the formula

$a=\frac{V2-V1}{t2-t1}$

in this problem we have

$V2=0 \\V1=3.5\frac{m}{sec}$

$t2=15\ sec\\t1=0$

substitute in the formula

$a=\frac{0-3.5}{15-0}$

$a=-\frac{3.5}{15}\frac{m}{sec^{2}}$

$a=-\frac{7}{30}\frac{m}{sec^{2}}$

therefore

the answer Part c) is

the acceleration is $-\frac{7}{30}\frac{m}{sec^{2}}$

This is an example of negative acceleration

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3 years ago

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Carly is a catcher on the school softball team. By the end of the season, she had played 45% of the 49 games the team played. In

Eduardwww [97]

Carly did not play 22 games

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2 years ago

Andre has 4 times as many model cars as Peter and Peter has one-third as many model cars as jade Andre has 36bmodel cars how man

kondor19780726 [428]

Answer: 9

Step-by-step explanation:

Andre has 4 x (the number of cars Peter has). Andre has 36 cars.

4P = 36

P = 9

6 0

3 years ago