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Alex73 [517]
3 years ago
14

What is the vertex of the graph of this equation y=2x^2+8x-24

Mathematics
1 answer:
sdas [7]3 years ago
3 0

Answer:

The vertex would be D) (-2, -32)

Step-by-step explanation:

To find the vertex , start by find the x-value. For this we can use the equation below.

x = -b/2a

In which a is the coefficient of x^2 and b is the coefficient of x.

x = -b/2a

x = -(8)/2(2)

x = -8/4

x = -2

Now that we have x, we find y by plugging -2 in for each x.

y = 2x^2 + 8x - 24

y = 2(-2)^2 + 8(-2) - 24

y = 2(4) - 16 - 24

y = 8 - 16 - 24

y = -32

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Since the numbers in each pair have the same sign, the product will be positive.

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Using proportions, the coordinates of point G are given as follows:

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<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount, and the measures are related using a rule of three. Due to this, relations between variables, either direct(when both increase or both decrease) or inverse proportional(when one increases and the other decreases, or vice versa), can be built to find the desired measures in the problem, or equations to find these measures.

The points A and B are given as follows:

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For this problem, we have that the ratio of AG to GB is 3:2, hence:

AG = 3/5AB

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The x-coordinate of G is found as follows:

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The y-coordinate of G is found as follows:

y - 4 = 3/5(0 - 4)

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Hence the coordinates of point G are given as follows:

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More can be learned about proportions at brainly.com/question/24372153

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R2+2r-33=0 solve by completing the square
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r=-1+34^(1/2) and -1-34^(1/2)
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