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Lemur [1.5K]
4 years ago
14

PLZZ HELP I NEED AN EXPERT ANSWER

Mathematics
1 answer:
stiv31 [10]4 years ago
4 0
Use the points (1, 15000) and (8, 1000) for the slope of the trendline

m = (1000 - 15000)/(8 - 1) = (-14000)/7 = -2000

y = -2000x + b
15000 = -2000(1) + b
15000 = -2000 + b
17000 = b

Equation
y = -2000x + 17000
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Write an equation in slope-intercept form for the line that has a slope of -4 and passes through (1, 2).
Svetradugi [14.3K]

y-y1 = m(x-x1) ..... point slope form

y-2 = -4(x-1) ... plug in the given info; solve for y

y-2 = -4x+4

y = -4x+4+2

y = -4x+6

Answer is choice C

5 0
3 years ago
Read 2 more answers
The rate at which a plant grows is constant. At the 3rd week it is 12 inches tall and at the 5th week it is 20 inches tall. If t
Arada [10]
First, you want to find the slope of the line. You do this by taking the difference in the heights divided by the difference of the time.
m=(20-12)/(5-3)
m=8/2
m=4
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y=mx+b
12=(4)(3)+b
12=12+b
b=0
This is saying that there is no y-intercept (b).
So our final equation is:
y=4x
The question is asking for y when x is 1, so just plug it into the equation:
y=4(1)
y=4


Hope this helps!
7 0
3 years ago
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Consider the following pair of equations:
Paha777 [63]
X-1=3x+3----plug the second equation in for x
-4=2x-------get the x on one side by subtracting x and 3
x=-2------divide by 2
y=x-1
y=-3------plug in x

(-2,-3)
3 0
4 years ago
Dylan keeps a fitness journal. Each week he runs 18 miles and swims 2 miles. What rules can you use to complete the table to sho
Kobotan [32]

Where are the boxes?

18/2 = 9

1st box - 18 : 2

2nd box - 36 : 4

3rd box - 72 : 8

etc . . .

6 0
3 years ago
20+20+20+20+20+20+20+20+20+/245+85678345+8657
melomori [17]

Answer:

85687162.0816

Step-by-step explanation:

3 0
2 years ago
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