Question 995387
.
x=number of people; y=total cost
.
y=a+bx
.
$1400=a+50b
$1400-50b=a
b=(a-$1400)/(-50)
.
$2600=a+100b
$2600-100b=a
b=(a-$2600)/(-100)
.
$1400-50b=$2600-100b
50b=$1200
b=$24
.
(a-$1400)/(-50)=(a-$2600)/(-100)
-100a+$140000=-50a+$130000
$10000=50a
$200=a