Writing equations and calculating cost based on a graph

[Kirito123]

So if I am correct should i just use that formula to solve for the graph i made?

 

[SammyS]

So if I am correct should i just use that formula to solve for the graph i made?

Yes, make a chart for prices all the way from 0 extra letters all the way to 12 extra letters. When finished, make sure it agrees with the graph.

 

[Kirito123]

ok

 

[Kirito123]

Yes that formula is right. i tried it with 0 , 1 , 2, and 3 and i got the same answer as shown on the graph. I think the whole reason i got it wrong was because i didn't look a the graph closely. i think i can do the rest now. Thx a lot :)

 

[SammyS]

Try larger values of x.

Check a larger range of the graph.

x=6, 8, 9,12 .

 

[Kirito123]

ok i will

 

[Kirito123]

Ok i tested it out for 6 and other numbers and i got the right answer, (srry for the late reply). But anyway that proves the formula is right and THX SO MUCH.

if I am wrong pls correct me. Formula : y = 1.25x + 11

 

[member 587159]

Ok i tested it out for 6 and other numbers and i got the right answer, (srry for the late reply). But anyway that proves the formula is right and THX SO MUCH.

if I am wrong pls correct me. Formula : y = 1.25x + 11

Seems good.

 

[Kirito123]

thank you again.