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4 years ago

A proportional relationship is formed when y=1 and x=-4 what is the value of x when y=4

Mathematics

1 answer:

ICE Princess25 [194]4 years ago

5 0

Answer:

x = - 16

Step-by-step explanation:

The equation relating two proportional quantities is

y = kx ← k is the constant of proportionality

To find k use the condition when y = 1, x = - 4

k = $\frac{y}{x}$ = - $\frac{1}{4}$

y = - $\frac{1}{4}$ x ← equation of proportionality

when y = 4, then

4 = - $\frac{1}{4}$ x (multiply both sides by - 4 )

x = - 16

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Step-by-step explanation:

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4 years ago

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3 years ago

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The point D(2, -5) is rotated 90° counterclockwise around the origin. What are the coordinates of the resulting point, D′?

jeyben [28]

Answer:

D' = (5, 2)

Step-by-step explanation:

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3 years ago

What is the value of x ?

valina [46]

Answer:

The value of x = 9

Step-by-step explanation:

∵ The figure has right angle and a line ⊥ from the right angle to the hypotenuse

∴ There is a relation between the ⊥ line and the two parts of the hypotenuse

∴ (⊥)² = multiplication of the two parts of the hypotenuse

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3 years ago