Question 987751
Less than or equal to 4, it is y=2x+1
greater than 4, it is y= x^2 +12
Look at 4.01 for example.
the second function will be greater than 16+12=28
Indeed, if the second function worked at 4, it would be 28.
It is not continuous.

{{{graph(300,300,-10,10,-10,30,2x+1,x^2+12)}}}