The cost of a suitcase is $62.50, and the selling price is $88. find the percent of markup on selling price.

a. 41%

b. 70%

c.29%

d.14%

$88-$62.50 =$25.50
25.5/62.5=.408
.408x100%=40.8
Round 40.8% to 41%
Answer is A

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!