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zmey [24]
3 years ago
14

What is the slope of the line that passes through (2,12) and (4,20)

Mathematics
1 answer:
iris [78.8K]3 years ago
6 0

Answer:

D. 4

Step-by-step explanation:

Use rise over run, (y2 - y1) / (x2 - x1)

Plug in the points:

(y2 - y1) / (x2 - x1)

(20 - 12) / (4 - 2)

8 / 2

= 4

So, the slope is 4.

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Write the direct variation function given that y varies directly with x, and y = 1.5 when x = 5.
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Answer:

y=0.3x

Step-by-step explanation:

Formula = K=\frac{y}{x}

y α x

y = kx

Where k is the constant of proportionality.

When y = 1.5; x = 5;

We substitute these known values in the equation,

y = kx

1.5 = k5

Dividing both sides of the equation by 5 to find the value for k, we have

1.5/5= k0.3/5

Therefore,

K = 0.3

Having found the value of k,

We substitute this value into the relationship

y = kx

Therefore we have,

y = 0.3x.

The direct variation function is therefore,

y = 0.3x.

[RevyBreeze]

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2 years ago
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3 years ago
How lond did the famouse war of 100 years last ?
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Answer:

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Which statement must always be true?
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