Find the relationship between ‘a’ and ‘b’ so that the function ‘f’ defined by f(x)=ax+1, if x≤3bx+3, if x>3 is continuous at x = 3.

Find the relationship between ‘a’ and ‘b’ so that the function ‘f’ defined by $f (x) = \{\begin{cases} a x + 1, i f x \leq 3 \\ b x + 3, i f x > 3 \end{cases}$ is continuous at x = 3.

Match the items on the right to the items on the left.