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BaLLatris [955]
3 years ago
15

Find the y value at the point x = -2.​

Mathematics
2 answers:
Wewaii [24]3 years ago
5 0

By looking at the graph, we can visually determine that the value of y when point x = -2 is <u>-4.</u>

harina [27]3 years ago
5 0

Answer:

-4

Step-by-step explanation:

The y value at x=-2 is -4 because when you go to -2 on the x-axis the function is below there.  You can only go straight up or straight down to determine the y-value that corresponds to x=-2 so we go down because the function is below the x-axis there.

We are going to go down until we get on the graph of the line.  Scroll over with eyeballs to see that the y there is -4 (use the y-axis).

So the ordered pair (-2,-4) is on our line and when x=-2, y=-4.

Another example:

y=0 when x=2

Another example:

y=2 when x=4

Another example:

y=-3 when x=-1

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Alright, lets get started.

The length of each section what carpenter needs to cut is 3 feet and 8 inches.

Converting 3 feet and 8 inches into feet only, we know, 12 inches = 1 feet

So, 3 feet 8 inches = 3 +\frac{8}{12} =3 +\frac{2}{3} =\frac{11}{3} feet

It means length of each section = \frac{11}{3} feet

Carpenter needs to cut 4 sections, so length of 4 sections will be = 4*\frac{11}{3}=\frac{44}{3}=14\frac{2}{3} feet

2/3 feet means 8 inches so she needs board 14 feet 8 inches

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Hope it will help :)

4 0
4 years ago
Whats 811 divide by 25
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Step-by-step explanation:

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Find the absolute extrema of f(x) = e^{x^2+2x}f ( x ) = e x 2 + 2 x on the interval [-2,2][ − 2 , 2 ] first and then use the com
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The second derivative is

f''(x)=2e^{x^2+2x}+4(x+1)^2e^{x^2+2x}=2(2x^2+4x+3)e^{x^2+2x}

and f''(-1)=\frac2e>0, which indicates a local minimum at x=-1 with a value of f(-1)=\frac1e.

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\dfrac1e\le f(x)\le e^8

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