Question

The value of y directly proportional to the value of x. If y= 8 when x= 12, what is the value of y when x= -15?

The value of y directly proportional to the value of x. If y= 3 when x= 24, what is the value of y when x= -8?

Answer 1

The value of y should be -10

Explanation:

If x and y are proportional, then 8/12=y/-15

The fractions just show the y values over the x values

Cross multiply to get 12y= -120

y= -10