In the expression [Image Displayed] what is k? a.
inverse variation
c.
constant of variation
b.
direct variation
d.
the solution

the answer is A

Step-by-step explanation:

this this is because a is inversely proportional to b so therefore k becomes an inverse variation

3< x< 5

step-by-step explanation:

|x - 4| < 1

there are two solutions, one positive and one negative.   remember to flip the inequality when taking the negative solution

x-4 < 1       x-4 > -1

add 4 to each side

x-4+4 < 1+4       x-4+4 > -1+4

x< 5                 x> 3

3< x< 5