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Andre45 [30]
4 years ago
10

HELP ASAP FOR BRAINLIEST:

Mathematics
1 answer:
goldenfox [79]4 years ago
8 0

Answer: y = -14/9(x + 4)^2 + 7

Step-by-step explanation:

The given roots of the quadratic function is (-1, -7)

The vertex is at (-4, 7)

The formula is

y = a(x - h)^2 + k

The vertex is (h, k)

Comparing with the given vertex, (-4, 7), h = -4 and k = 7

Substituting into the formula

y = a(x - h)^2 + k, it becomes

y = a(x - - 4)^2 + 7

y = a(x + 4)^2 + 7

From the roots given (-1, -7)

x = -1 and y = -7

Substituting x = -1 and y = -7 into the equation,

y = a(x + 4)^2 + 7, it becomes

-7 = a(-1+4)^2 + 7

-7 = a(3^2 ) + 7

- 7 = 9a + 7

-7-7 = 9a

9a = -14

a = -14/9

Substituting a = - 14/9 into the equation, it becomes

y = -14/9(x + 4)^2 + 7

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3 0
4 years ago
What is an equation for the line perpendicular to y = 3x – 1 that passes through (-9, -2)?
FinnZ [79.3K]

Answer:

  • y = -1/3x - 5

Step-by-step explanation:

<u>Perpendicular lines have negative reciprocal slopes, so the line is:</u>

  • y = -1/3x + b

<u>Finding the value of b, using the given point (-9, -2)</u>

  • -2 = -1/3*(-9) + b
  • -2 = 3 + b
  • b = -2 - 3
  • b = -5

<u>The line is</u>

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3 0
3 years ago
Pleace answer importaint!!!
drek231 [11]

Answer: perimeter = 302m

area = 5544m^2

Step-by-step explanation:

perimeter = 2(l + b)

= 2(63 + 88)

= 2 x 151

= 302 m

Area = l x b

= 88 x 63

= 5544 m^2

Hope it helped u,

pls mark as the brainliest

^_^

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