How do you find the slope for y=7x-1

Of four points are collinear, they are also coplanar

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling

Jabari is power washing houses for a summer job. for every job, he charges an initial fee plus $30 for each hour of work. his total fee for a 4 -hour job, for instance, is $170 . jabari's total fee,f, for a single job is a function of the number,t, of hours it takes him to complete the job. write the function's formula.