Answer:
Yes
Explanation:
Yes , y=9x+1 is a function
There are two conditions for a relation to be a function.
Condition 1 :
For every value of x there must be a value existing
In this case if we take any real value of x , there will be some y defined for that value hence this condition satisfies.
Condition 2 :
No value of x should have two different values in y
In this case also , there are for every real value of x , we have an uniques value of y. Hence this condition also satisfies here.
Hence y=9x+1 is a function