Question

Help Please !!!!!

OK so I just graphed using slope intercept form and on the next question it says why don't the lines start at the origin. Now the lines I have graphed don't start at the origin but the problem is I no clue why they don't. Is there a certain reason why they might not Please help.

Answer 1

They are asking why it doesn't.. what's the equation?

Answer 2

it is y=25+10x and y=18+15x

Answer 3

Whats the first question please?

Answer 4

Two cell phone companies have different rate plans. Runfast has monthly charges $25 plus $10 per gig of data. B A &D’s monthly charge is $18 plus 15 per gig of data. Your task is to determine under what circumstances each company has the better pricing. You will derive and solve a set of equations, graph those equations, and evaluate the meanings for these events. Don’t worry; I have a series of questions to guide you through the process. Good luck!
1. Determine the equation for the monthly charges for Runfast and B A&D.

Answer 5

Number 2 said solve this system of equations using the substitution method i did that and i got x=7/5 and y=39

Answer 6

they dont start at the origin becuase of the montgly standing charges. You pay this whether you use the phone or not.

Answer 7

your solutions are correct

Answer 8

those numbers correspond to where the graphs of the equations intersect.

Answer 9

ok good i thought I might have done that wrong

Answer 10

this is what my teacher wanted us to use to graph using slope intercept form