Given function is .

Put .so

RTo identify the vertex, rewrite the given function as .

that means .

So, h = and k = .

The vertex is .

Compare with . so, the graph of the is the graph of

rvertically stretched by a factor of 3 and then reflected in the x - axis. \ \

The graph has vertex (0,0) and passes through .

The graph has vertex (0,0) and passes through .