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zlopas [31]
3 years ago
12

If y varies directly with x, and y = 2 when x = −4, what is the value of y when x = 20

Mathematics
1 answer:
Klio2033 [76]3 years ago
3 0

Answer:

y = - 10

Step-by-step explanation:

Given that y varies directly with x then the equation relating them is

y = kx ← k is the constant of variation

To find k use the condition y = 2 when x = - 4, that is

2 = - 4k ( divide both sides by - 4 )

= k, that is

k = -  

y = -  x ← equation of variation

When x = 20, then

y = -  × 20 = - 10

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1 year ago
I hope you guys can see the question, if not just let me know
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Answer:

The correct answer is 6.

Step-by-step explanation:

When translating and reflecting figures, the shape remains the same. So, the side of 2x-4 is corresponding to the side of 8 and they are equal to each other.

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