A company can make 60 computers for $58,200, and can make 90 computers for $85,200. write an equation that represents the cost, c, of x computers.

(60,58200), (90,85200)

slope = (85200 - 58200) / (90 - 60) = 27,000/30 = 900

y = mx + b

slope (m) = 900

(60,58200) ... x = 60 and y = 58200

sub and find b, the y int

58200 = 900 (60) + b

58200 = 54000 + b

58200 - 54000 = b

4200 = b

ur equation is : C (x) = 900x + 4200 < = = ur equation