If a=(-1,-3) and b=(11,-8) what is the length of ab

Can you simplify 4/7? 24 points will be awarded!

Sunday: 1 1 2 monday: 1 tuesday: 2 1 2 wednesday: 1 3 4 thursday: 2 friday: 1 1 2 saturday: 2 jenna is a swimmer and trains every day. the schedule shown outlines the number of hours she trains each day. what is the total number of hours that jenna trains during the week?

Which equation represents a line that is parallel to the line whose equation is 3x-2y=7( show all work)