Quick Homework Help

# If it is y2-y1/x2-x1 then why can you do y1-y2/x1-x2? Its confusing D: ⚑ Flag

by xXscenexswaggxvickyXx at December 03, 2009

you can do that, but it will be more confusing because you will end up with negative numbers. Does that Help?

David807 December 03, 2009

You can do both, because a positive on top and a negative on the bottom is the same as a negative on top and a positive on the bottom. For example, 5/-7 is the same as -5/7. The absolute values of two numbers that are subtracted are equal, for example |5-7| is the same as |7-5|

noobz December 04, 2009

Yes, you can do that but you have to be consistant with x and y. when you use y1-y2, you have to use x1-x2.

The_Engineer December 04, 2009

The 1 & 2 are simply references to other things. They have no actual meaning, like an exponent or coefficient. They juat mean the first number and the second number. So, you can put either one first, as long as you go the same way on the top and the bottom. The difference will all come out in the division.

bpeters December 16, 2009