Question

what is the constant variation k of the of the direct variation y=kx through 5,8

Answer 1

y = kx

Through point  5, 8.  When x = 5,  y = 8

y = kx

8 = k*5

8 = 5k

8/5 = k

k = 8/5 = 1.6

k = 1.6

I hope this helps.