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Readme [11.4K]
3 years ago
7

How do I rewrite this in vertex form? Y=2x^2-8x+9

Mathematics
1 answer:
Aleksandr-060686 [28]3 years ago
5 0

Complete the <u>square</u> on the right side of the <u>equation</u>

2(x-2)^2+1

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Classify this triangle by its sides and angles.
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Answer:

choice 3) acute and equilateral

Step-by-step explanation:

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The equation of the parabola whose focus is at (7 0) and directrix at y=-7 is
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The equation of the parabola whose focus is at (7, 0) and directrix at y = -7 is 
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The table below represents a function. Which of the following equations could be its function rule?
worty [1.4K]

Answer:

y=2x-2 is the required equation.

Therefore, the second option is true.

Step-by-step explanation:

We know that the slope-intercept form of the line equation of a linear function is given by

y=mx+b

where m is the slope and b is the y-intercept

Taking two points (0, -2) and (1, 0) from the table to determine the slope using the formula

\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}

\left(x_1,\:y_1\right)=\left(0,\:-2\right),\:\left(x_2,\:y_2\right)=\left(1,\:0\right)

m=\frac{0-\left(-2\right)}{1-0}

m=2

substituting the point (0, -2) and the slope m=2 in the slope-intercept form to determine the y-intercept i.e. 'b'.

y=mx+b

-2 = 2(0)+b

-2=0+b

b=-2

Now, substituting the values of m=2 and b=-2 in the slope-intercept form to determine the equation of a linear function

y=mx+b

y=2x+(-2)

y=2x-2

Thus, y=2x-2 is the required equation.

Therefore, the second option is true.

3 0
3 years ago
Question 2 (1 point) Lin knows there are 4 quarts in a gallon. She wants to convert 6 quarts to gallons, but she cannot decide i
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Answer:

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Step-by-step explanation:

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Answer:

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