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vfiekz [6]
3 years ago
6

Please help Find the range of the data set: 7 12 15 4 23 15 25 9

Mathematics
2 answers:
arlik [135]3 years ago
5 0
The answer would be 19 because you take the highest number (23) and subtract the smallest number (4) which would equal 19. 
julia-pushkina [17]3 years ago
3 0
The range of a data set is the highest number - the lowest number.

So ur range is : 25 - 4 = 21 <==
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Answer:

slope: -3

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the slope is "the amount of change in the y direction when you take one step to the right".

In the first graph you can see that (0,0) and (1,-3) are on the graph. So when you step from x=0 to x=1, the graph moves 3 units down. Hence the slope is -3. The minus sign means down.

Sometimes it is difficult to see the change in the y direction when only taking 1 step to the right. That's no problem, if you take e.g., 4 steps to the right, you have to divide the y change that you found by 4.

Written in a formula it is dy/dx, a.k.a: the y change divided by the x change.

So that takes care of the slope.

In a general formula for a line y = ax + b, the slope is the letter a.

b is used to move the graph up and down. The first graph moves through (0,0) so no b needed, hence the equation y = -3x.

If b would be, say, 5, the graph would be lifted up by 5. In fact, the point (0,b) will be the point where the graph crosses the y-axis. So you find b by finding the intersection with the y axis. x must be 0 at this point.

With this approach you can solve all assignments easily.

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All i know is that both of them are parallel 

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