State whether the relationship between the variables in the table is a direct variation, an inverse variation, or neither. If it is a direct or inverse variation, write a function to model it.

x 3 9 13 20
y 9 27 39 60

Question

State whether the relationship between the variables in the table is a direct variation, an inverse variation, or neither. If it is a direct or inverse variation, write a function to model it. 


x                          3  9  13  20  
y                          9  27  39  60

anonymous · Answer

Please Help me ?

rsadhvika · Answer

observe the first entry

x=3
y=9

rsadhvika · Answer

y is 3 times x, right ?

rsadhvika · Answer

see if thats the case for other entries also

y = 3x

anonymous · Answer

yes because 3*9= 27 . and 3*13 is 39 Right ?

rsadhvika · Answer

correct ! so y varies directly with x
you have a direct variation !!

anonymous · Answer

Thank you sooooo much !!!! (:

rsadhvika · Answer

you wlcme :)