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castortr0y [4]
3 years ago
7

In what direction does the function f(x)=−(14x−1)(4x+1) open? Explain.

Mathematics
1 answer:
Svetradugi [14.3K]3 years ago
4 0

Answer: Direction opens downward

Step-by-step explanation:

X-Intercept: (1/14,0),(-1/4,0)

Y-Intercept: (0,1)

Find the vertex using x= -b/2a

Plug it into the vertex form = y=a(x-h)^2 +k

H,K will identify the direction.

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Which equation represents a line that passes through (4, left-parenthesis 4, StartFraction one-third EndFraction right-parenthes
Alina [70]

Answer:

y-\frac{1}{3}=\frac{3}{4}(x-4)

Step-by-step explanation:

we know that

The equation of the line into point slope form is equal to

y-y1=m(x-x1)

In this problem we have

point\ (4,\frac{1}{3})

m=\frac{3}{4}

substitute the given values

y-\frac{1}{3}=\frac{3}{4}(x-4)

y minus StartFraction one-third EndFraction equals StartFraction 3 Over 4 EndFraction left-parenthesis x minus 4 right-parenthesis.(x – 4)

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3 years ago
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Jessica's annual salary decreased by 3800, which was a 9% decrease. what was Jessica's original salary?​
Andrei [34K]

Answer:

Step-by-step explanation:

x = original salary

$3800 = (1-9%)x = (1-0.09)x = 0.91x

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7 0
3 years ago
Need help on this one I really don’t get this
Sophie [7]
Its 0 cause 0 divided by any number is 0 but if it was 15/0, then it would be undefined
3 0
2 years ago
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. . . . . . . . . . . . . . .

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Megan purchased a new gadget for her technology hobby. She plans to sell it sometime in the future, however, its value depreciat
ElenaW [278]

Answer:

The second term defines the value that will be depreciated by the rate of 22 units for m months.

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Given is :

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The original value of the gadget is 2020 units.

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