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Zanzabum
3 years ago
10

Y varies directly as x. y = –9 when x = 3 What is the equation? Find y when x = –15.

Mathematics
1 answer:
lyudmila [28]3 years ago
3 0

Answer: -3 = k


Step-by-step explanation: y/x = k is the equation.

Okay so you plug in y into that equation and x also. You should have the equation -9/3 = k. All you do is solve! You should get -3=k. I hope this helped! :D


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The solution is 6x^5+60x^4+150x^3

Explanation:

The given expression is 6x(x^{2} +5x)^2

We need to determine the solution of the given expression.

The solution of the expression can be determined by expanding the expression.

Let us use the identity (a+b)^2=a^2+2ab+b^2 to expand the term (x^{2} +5x)^2

Thus, we have,

6x((x^{2} )^2+2(x^{2} )(5x)+(5x)^{2} )

Simplifying the expression, we have,

6x(x^{4}+10x^3+25x^{2} )

Multiplying the term within the bracket, we get,

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5 0
3 years ago
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Ronch [10]

Pick 2 coordinates:

I choose first & last one (0,15) & (8-9)

Change in y is 24

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8 0
2 years ago
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