Umesh’s total charge for an onsite job is: a fixed charge of $50 per job, plus an hourly charge of $80 per hour. which one of the following formulas shows how umesh’s total charge in dollars, c, relates to the number of hours, h, he spends on a job?
= 50h – 80
c = 50h + 80
c = 80h – 50
c = 80h + 50
c = 130h

It's C = 80h + 50. Umesh gets 80$ per hour(80 * h), plus 50 per job, no matter how much time he spends on it. 

Abit confused about what you mean, but i think you might be referring to slope intercept form: y = mx + bin that case b, or the y intercept is already given.(0,-1)find the slope by using the formulay2 - y1/x2 - x1the final slope will be 4/2, equivalent to 2.now your equation should look like thisy = 4/2x -1sorry if this didn’t you out!