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3 years ago

-4x + 11y = 15 x=2y Solve for y and x

Mathematics

1 answer:

Stolb23 [73]3 years ago

8 0

Answer:

to find Y

-4x + 11y = 15

x - 2y = 0

equal= -3x + 9y= 15

since x=2y

-3(2y) + 9y = 15

-6y + 9y =15

3y = 15

y = 15/ 3

y = 5

to find x

using x=2y

since

y=5

,therefore

x= 2(5)

x= 10

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Answer:

Part 1) The function of the First graph is $f(x)=(x-3)(x+1)$

Part 2) The function of the Second graph is $f(x)=-2(x-1)(x+3)$

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See the attached figure

Step-by-step explanation:

we know that

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Part 1) First graph

we know that

The solutions or zeros of the first graph are

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The parabola open up, so the leading coefficient a is positive

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substitute and solve for a

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therefore

The function is equal to

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Part 2) Second graph

we know that

The solutions or zeros of the first graph are

x=-3 and x=1

The parabola open down, so the leading coefficient a is negative

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$f(x)=a(x-1)(x+3)$

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substitute and solve for a

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$8=a(-2)(2)$

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therefore

The function is equal to

$f(x)=-2(x-1)(x+3)$

Part 3) Third graph

we know that

The solutions or zeros of the first graph are

x=-2 and x=6

The parabola open up, so the leading coefficient a is positive

The function is equal to

$f(x)=a(x-6)(x+2)$

Find the value of the coefficient a

The vertex is equal to the point (2,-8)

substitute and solve for a

$-8=a(2-6)(2+2)$

$-8=a(-4)(4)$

$a=0.5$

therefore

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3 years ago

Is 2/4 greater then 5/6?

AfilCa [17]

Answer:

No 5/6 is greater

Step-by-step explanation:

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2 years ago

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valkas [14]

Step-by-step explanation:

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katrin2010 [14]

Answer:

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3 years ago

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oee [108]

Answer:

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