Question

Select the correct answer from each drop-down menu. The slope of the line passing through the points (7,5) and (21, 15) is :5/7 , 7/5 , 5 or 7 ? { Another line with a slope that is one-third that of the slope you just calculated passes through the origin and the pointpick one from these :3,53,721,521,7 }

Answer 1

To calculate the slope we have to do the following

`m=(15-5)/(21-7)=(10)/(14)=(5)/(7)`

So answer the answer is 5/7

To answer the other question, we have to divide by 3 the slope

`(5)/(7\cdot3)=(5)/(21)`

So the equation of the second line is

`y=(5)/(21)x`

so one point of it is (21,5)