Find the slope of the lines as fractions

The general formula to get the slope of the line is:


Question (7):
We are given the points:
(-1,-11) representing (x1,y1)
(16,-8) representing (x2,y2)
using the above formula, we can get the slope as follows:


 

Question (8):
We are given the points:
(-14,10) representing (x1,y1)
(-3,15) representing (x2,y2)
using the above formula, we can get the slope as follows:


 

Question (9):
We are given the points:
(-17,-19) representing (x1,y1)
(-7,-5) representing (x2,y2)
using the above formula, we can get the slope as follows:


 

Hope this helps :)

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)