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Zinaida [17]
4 years ago
14

A line includes the points (9,0) and (-9,2). What is its equation in slope-intercept form?

Mathematics
1 answer:
horsena [70]4 years ago
4 0
Y=mx+b

First use the two point slope formula to find m

(y2-y1)/(x2-x1)
(2-0)/(-9-9)
2/-18
1/-9=m

Next use the point slope formula to find the answer

y-y1=m(x-x1)

y-0=1/-9(x-9)

Now use Distributive Property 
y-0=1/-9(x)+1/-9(-9)
y-0=1/-9x+1

Your answer would be 
y=-1/9x+1
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Answer:

4 hours

Step-by-step explanation:

The distances and average speeds for the first two days driven are show below.

Step 1

We calculate the total distance covered in the first two days

First day: 6 hours at an average speed of 60 miles per hour

Hence:

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Hence:

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Step 2

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In the question, we are told:

If the average speed on the third day is 50 miles per hour,

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