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MatroZZZ [7]
3 years ago
6

The vertex of the graph of a quadratic function is (–2, –9) and the y-intercept is (0, –5). Which of the following is the equati

on of the function?
Mathematics
2 answers:
Sunny_sXe [5.5K]3 years ago
7 0

Answer:

D. On edge

Step-by-step explanation:

allochka39001 [22]3 years ago
5 0
F(x)=a(x-h)^2 + k
f(x)=a(x + 2)^2 - 9
f(0)=5
5=a(0+2)^2 - 9
5=4a-9
4a=14
a= 7/2
f(x)=7/2(x^2 + 4x + 4)-9
=7/2x^2 +14x + 14 - 9
f(x)=3.5x^2 +14x + 5
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dybincka [34]

Answer:

x=4 and y=4

Step-by-step explanation:

From first function we have:

3x - 4y =  - 4 \\ 4y = 3x  + 4

And from the second one:

y = 2x - 4 \\ 4y = 8x - 16

Substitute them:

4y = 3x + 4 \\ 4y = 8x - 16 \\  \\ 0 =  - 5x + 20 \\ x = 4 \\ y = 4

7 0
2 years ago
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likoan [24]

The answer is B

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3 0
3 years ago
Which expression is equivalent to 7/2h - 3 (5h - 1/2)
poizon [28]

7/2h-3/2step-by-step

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5 0
2 years ago
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8 0
3 years ago
Pieces of Mail. The number of pieces of mail
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Answer:

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