The slope of the line through the points (5, -1) and (-8, -4) is 13 3 . This value indicates that for every 13 units moved horizontally, there are 3 units moved vertically upwards. The slope represents the steepness and direction of the line.
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The answer to your problem is 3/13
You get this answer by using the formula
(y2-y1)/(x2-x1)
Just plug in the variables and you should get the correct answer.
You can use this formula on similar questions too!!
Now there are two ways of solving but the second one needs a calculator.
In Desmos you click the plus button on the top to add a table. Enter your coordinates into the table. Then hit enter and make a new "box thing". In the new box type the formula y1~mx1+b.
Make sure you use the "~" sign.
(if you have more than one table open, make sure you are using the right identifying number in your formula)
I really hopes this helps right now and with future problems!!