Question

Tom buys a new phone service. It costs $20 to install, and then costs $5 a month. Write an equation to show the cost of the phone (y) for any number of months (x).

Answer 1

okay: let y equal the cost. and x equal months.
so:
$20 is a one time fee.
$5 is price for each month

therefore:

y=5x+20

Answer 2

thank you

Answer 3

can you help me with another one

Answer 4

yes but you need to open a new question. for this question you can look at my comment and mark "best response" then close the question and type a new one. in the question or in a comment, put @montelbaun. and it will send me a link to your question

Answer 5

For the straight line y= \[\frac{ 1 }{ 2 }x\]-4 , what are the slope and y-intercept?

Answer 6

okay ill answer it on here but next time open a new question :)

Answer 7

are you familiar with the general slope-intecept formula:

y=mx+b

Answer 8

yeah kinda not really.

Answer 9

okay well that is what is used to solve this easily. in y=mx+b:

m=slope
b=y-intercept.

therefore in y=\[\frac{ 1 }{ 2 }x-4\]
m=\[\frac{ 1 }{ 2 }\]

Answer 10

and the y-intercept is -4 because: