Question

Please visit my previous questions to know what the word problem is

Answer 1

Answer:

As below

Step-by-step explanation:

using eq from problem 4)   y = -45x + 1080

then use the point slope formula with the slope of the above line at -45 and plug in your given point of (8, 240)

y-y1 = m(x-x1)   where m is the slope above

y-240 = -45 (x - 8 )  this is an equation for the line but the teacher probably wants the slope intercept form... the formula is y = mx + b

soooo...

y-240 = -45x + 360

y = -45x +360 + 280

y =  -45x + 640

there you go :)