Question 59494
The phrase "y is function of  x"  means that the value of y  depends upon the value of x. so y  can be written in terms of x
for example,   y= 3x+1

Now here you have to rewrite the function, 4x - 10y = 11 as a function of x

For that bring the term contains y   on one side and take all other terms in the other side.
Then it comes like this,  10y =4x-11

Again  rewrite the expression like this,  y =(4x-11)/10 which gives a function of x.