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SVETLANKA909090 [29]
3 years ago
9

Which equation represents a line that has a slope of -1/2 and passes through point (4, –5)?

Mathematics
2 answers:
Wewaii [24]3 years ago
8 0
Y=-1/2x-3

You can rewrite the equation “y=mx+b” and fill in what you know. So your equation would look like y=-1/2x+b when filling in what you know. Now you can take the (x,y) coordinates that you were given and plug them into the equation and solve for b. So now it would be -5=-1/2(4)+b
Dominik [7]3 years ago
4 0

Y=-1/2x-3 is the best answer

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Answer:

x ≅ 20.10 torr

Step-by-step explanation:

Given that the equation which models blood pH in the question is;

pH(x)=6.1+log(800/x)

where;

pH = 7.7

x = partial pressure of carbon dioxide in arterial blood, measured in torr.

we are asked to find (x)

In order to do that, we use the given equation:

pH(x)=6.1+log(800/x)

since pH = 7.7

7.7 = 6.1 + log (800/x)

7.7 - 6.1 =  log (800/x)

1.6 =  log (800/x)

10^{1.6}= \frac{800}{x}

x= \frac{800}{10^{1.6}}

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geniusboy [140]

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2 years ago
What is the slope of this line!
vesna_86 [32]

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-1/3

Step-by-step explanation:

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3 0
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Step-by-step explanation

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=4*2

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