For the data in the table, does y vary directly with x? If it does, write an equation for the direct variation.
I NEED ANSWERS FOR THE WHOLE TEST ASAP THERE ARE 24 QUESTIONS 23 AND 24 ARE ESSAYS
x|y
8|13
16|26
24|39
A-yes;y=5x
B-yes;y=10x
C-yes;y=1.625x
D-no; y does not vary directly with x.
y = 13 x / 8 = 1.625 x
Check:
x = 8 , y = 13 • 8 / 8 = 13
x = 16 , y = 13 • 16 / 8 = 208 / 8 = 26
x = 24 , y = 13 • 24 / 8 = 312 / 8 = 39
Answer C