Slopes?
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Question

Slopes?
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anonymous · Answer

Pick two coordinates from a graph and use this formula;

$$m = \frac{ y_{2}-y _{1} }{ x _{2}-x _{1} }$$

anonymous · Answer

To find the slope of a line, you need to find the Rise (change in Y) over it's Run (change in X). To find these slopes, a simple way to do it would be just to count how many boxes the line moves up and down and then compare how many boxes it moves left and right for the same two end points.

anonymous · Answer

cant we just simply use rise/run

anonymous · Answer

Yes, that's what the formula means, and that's what stedan explained.

anonymous · Answer

so for a 3/1 = 3x-2
for b 1/8 = 1/8x +1.5
for c  ?
for d i-1/8 = -1/8x +1.5

anonymous · Answer

Those seem right to me, although it is hard for me to read the graphs (probably just my computer). For C, you'll just have to use the smaller gridlines, I guess.

anonymous · Answer

4/1= 4x-3

anonymous · Answer

@ganeshie8

ganeshie8 · Answer

what do you mean by  `4/1= 4x-3` ?

ganeshie8 · Answer

equation of line is
$\large y =  mx + c$
 
okay ? we must show the left side $y$ always...

ganeshie8 · Answer

`so for a 3/1 = 3x-2`

You mean to say :
slope = 3/1 = $3$
equation of line is  $\large y = 3x - 2$

right ?

anonymous · Answer

@ganeshie8