Which equation shows the total amount of cash back, c, that a costumer can earn after making p dollars of purchases with the card

option 1 is correct.

step-by-step explanation:

y varies inversely with x and constant of variation is 4

the equation will be:

y = k/x

where k =4 so,

y = 4/x

if we put values of x of option 1 in the above equation and find values of y

y = 4/-2 => y =-2

y = 4/-1 => y = -4

y = 4/1 => y = 4

y = 4/2 => y =2

so, all the values of x and y are correct.

if we put values of x given in other options and find value of y we cannot find whole table satisfying the equation.

hence option 1 is correct.

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

make sure you have version 2.50

try looking in the very back of the book : )

step-by-step explanation:

you can download it here