find the slope if it exists, of the line containing the pair of points. (1,3) and (7,-7) I know you have to do it like -7-3/7-7 and then I get -10/6 and then -1.66666666666667 what do i do to simplify it and write as the answer

then reduce -10/6 to lowest term.

okay and how do i do that . that is what i was asking?

look for a common factor of 10 and 6,,

for example if you have 6/4, 6 and 4 have a common factor of 2, thus you can factor out 2 from both:
2*3 / 2*2 = 3/2
like that. try it to -10/6 ~ :)

i still don't get it

hmm,, well try this one, what are the factors of 10?

5 and..?

what do you multiply by 5 to get 10?

right. 5 and 2 are the factors of 10 because

2 * 5 = 10

now, what are the factors of 6?

3 and 2?

is that right? then what do i do. What is the answer?

yes! that's right! :)

now, from the factors of 10 (which is 2 and 5) and factors of 6 (which is 2 and 3), what number is common?