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2 years ago

The following relations are written as equations. Which one is NOT a.

Mathematics

2 answers:

julia-pushkina [17]2 years ago

8 0

Answer:

x = 4

Step-by-step explanation:

doesn't pass the vertical line test

Softa [21]2 years ago

8 0

Answer:

x=4

Step-by-step explanation:

Realize that a function can only have one output, y, for each unique input, x.

<u>2 Methods on finding if something is a function or not.</u>

Do the vertical function test

To use the vertical line test, take a ruler or other straight edge and draw a line parallel to the y-axis for any chosen value of x. If the vertical line you drew intersects the graph more than once for any value of x then the graph is not the graph of a function.

Plug in points! See if there are more than one outputs for y

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Ber [7]

Answer: 6m -5

Distribute 5
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1 year ago

a cylindrical can has a circumference of 40cm and a capacity of 4.8 litres. Find the capacity of a similar cylinder of circumfer

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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2 years ago

Read 2 more answers

The height, h, in feet of a ball above the ground is given by h = −16t2 + 64t + 80, where t is the time in seconds. How long doe

Gwar [14]

Answer:

t = 5 seconds

Step-by-step explanation:

It is given that, the height h, in feet of a ball above the ground is given by :

$h=-16t^2+64t+80$

Where t is in seconds

We need to find how long does it take the ball to hit the ground? When it hits the ground, its height will be equal to 0. So,

$-16t^2+64t+80=0\\\\t=\dfrac{-64\pm \sqrt{(64)^2-4\times (-16)(80)} }{2\times -16}\\\\t=\dfrac{-64+ \sqrt{(64)^2-4\times (-16)(80)} }{2\times -16},\dfrac{-64-\sqrt{(64)^2-4\times (-16)(80)} }{2\times -16}\\\\t=-1\ s\ \text{and}\ t=5\ s$

Neglecting negative time.

It means ball will take 5 seconds to hit the ground.

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2 years ago