How many lines of symmetry does a 15 sided polygon have?

Choose the equation that represents the graph below: (1 point) graph of a line passing through points negative 3 comma 0 and 0 comma 3 y = x − 3 y = −x + 3 y = −x − 3 y = x + 3 will award !

Can someone me with this graph problem by the way i need to know the answers by today since this assignment is due ! !

What is the location of maximum over the interval [-3,1.5] for the graphed function?