3=-2|1/4s-5|+3 how to do it step by step?

Find the equation using the point (4,8)

Can someone me out here and the tell me the greatest common factor

The graph and table shows the relationship between y, the number of words jean has typed for her essay and x, the number of minutes she has been typing on the computer. according to the line of best fit, about how many words will jean have typed when she completes 60 minutes of typing? 2,500 2,750 3,000 3,250