7y 4x and 2x they all are paired with a variable
The major axis is 4 units long andyhe vertices are 4 units to the left/right.
Given:
y is directly proportional to x.
when 
To find:
The equation that connects y with x.
Solution:
It is given that, y is directly proportional to x. So,

...(i)
Where, k is the constant of proportionality.
We have,
when
. Substituting these values in (i), we get
Divide both sides by 5.
Substituting
in (i), we get
Therefore, the required equation is
.
wdym: 14 of the total cake