Question

Part A what is the unit rate for Brand A?Part B What is the unit rate for Brand B? Part C which brand is more expensive? Part D how much could you save if you purchased 4 meters of coaxial cable?

Answer 1

A) To find the rate of brant A we will divide the coordinate y by the coordinate x in any point of the line so for example I use the coordinate: (4,9)

`r=(9)/(4)=2.25`

B) for the brand B I use the coordinate (2,3) so:

`r=(3)/(2)=1.5`

C) so in this case brand A is alwais more expensive than brand B

D)

if you bought 4 meters in brand A you will spend more or less 9 dollasr and in the brand 2 mor or less 6 dollars, so in total you save 3 dollars