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

Mathematics

2 answers:

julia-pushkina [17]3 years ago

8 0

Answer:

x = 4

Step-by-step explanation:

doesn't pass the vertical line test

Softa [21]3 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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The distribution of the amount of money spent by students on textbooks in a semester is approximately normal in shape with a mea

Archy [21]

Answer:

Step-by-step explanation:

Given data:

$\mu = 473$

standard deviation is $\sigma= 28$

As distribution is normal in shape and values are symmetrical

The standard deviation rule says that 95% of observation lies between the second standard deviation of the mean

so, approximately only 5% of observation lies outside the interval and normal shape is symmetric. hence approximately 0.15% of observation lies above the interval

$= \mu + 2\times \sigma$