Line  mn  passes through points  m(4, 3) and  n(7, 12). if the equation of the line is written in slope-intercept form,  y  =  mx  +  b, what is the value of  b?

Given the following sampling distribution of one mean with a sample size 49, from a normally distributed population,find the population standard deviation, o.79828588912497

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

Whats are the trickiest steps to do when adding or subtracting rational expressions? how does knowledge of rational numbers u in adding and subtracting rational expressions?