Which property would be used to isolate the variable j in this equation? 7 x j=49 a. addition property of equality b. commutative property of addition c. multiplication property of equality d. distributive property

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.

i think 5 miles per hour

step-by-step explanation:

answer:

a=9

step-by-step explanation: lmk if you need a explanation

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step-by-step explanation: