This problem is in Khan Academy
In this graph the instantaneous velocity=decline.
You just have to do this:
And the answer is letter (A)
ANSWER

or

EXPLANATION
We want to find the equation in point-slope form of a line that passes through the points (3, −5) and (−8, 4).
The point-slope form is given by;

where

is the slope of the line.
If

The point-slope form is

On the other hand, if

Then the point-slope form is,

These two equations are the same when simplified.
Answer:

Step-by-step explanation:

<u>Divide both sides by -2:</u>
<u />
<u />
<u>Divide -20 by -2 = 10</u>
<u />
<u />
<u>Subtract 4 from both sides:</u>
<u />
<u />
<u />
<u />
<u>______________________</u>
Answer:
b= -3
x= -2
x= -7
n = -6
Step-by-step explanation:
3b+7-1=-3
3b = -3 -7 +1
3b = -10+1
3b= -9
b = -9/3
b= -3
3x+1-6x=7
-3x = 7-1
-3x= 6
x= -6/3
x= -2
312=-6(7x-3)
312 = -6*7x +6*3
312= -42x +18
312-18= -42x
294 = -42x
x= -294/42
x= -7
-4(4n-8)=128
-4*4n +4*8 =128
-16n +32 = 128
-16n= 128-32
-16n = 96
n=-96/16
n = -6
The scale factor as I understand it will just be 1 to 30, inches to miles.
however, in this case it seems to be suggesting a conversion to the same unit, say hmmm let's convert the miles to inches.