y varies directly with x means:
y = k ∙ x
if x = 8 and y = 24 then:
24 = k ∙ 8
Divide both sides by 8
3 = k
k = 3
y = 3 ∙ x
when x = 10 then:
y = 3 ∙ 10 = 30
Suppose y varies directly with x, and y=24 when x =8. what is the value of y when x=10.
I learned how to do these kind of problems recently, but forget how to do them, and am currently unable to review the livelesson, so could someone plz help meh?
3 answers
Thank you a bunch, i got it now, thanks
Thank you so much Bosnian!