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2 years ago

Y is directly proportional to (x-4) when x=16, y=3 find y in terms of x

Mathematics

2 answers:

Paha777 [63]2 years ago

6 0

Answer:

y = ¼(x-4)

Step-by-step explanation:

Before solving the question, let's look at one example,

A is directly proportional to B means A∝B which also means A=kB where k is a constant.

In this case, y is directly proportional to (x-4) means that y∝(x-4) which can also mean that y=k(x-4).

Hence, to find the value of k, substitute x=16, y=3 into y=k(x-4),

3=k(16-4)

k=3/12

k=1/4

After that, substitute the k value into the equation,

dalvyx [7]2 years ago

4 0

Y = x/4 - 1

Step by step explanation in pic

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lbvjy [14]

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2 years ago

What is the product?<br> [4 3 -1 -1] x [-3 1 -2 -2]

IrinaVladis [17]

Answer:

Option A

|-6 -2|

|1 1|

Step-by-step explanation:

This is a product of a matrix.

So for the first number on the first row, we have;

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For the second number on the first row, we have;

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For the first number on the second row, we have;

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Thus, we now have;

|-6 -2|

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3 years ago

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avanturin [10]

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step-by-step explanation:

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