Question Function Find the vertex Find the axis of symmetry Evaluate the derivative Load more (0,−15) Evaluate h(t)=t2−15Find the t-coordinate of the vertex by substituting a=1 and b=0 into t = −2ab t=−2×10Solve the equation for t t=0Find the y-coordinate of the vertex by evaluating the function for t=0 h(0)=02−15Calculate More Steps Evaluate 02−15Calculate 0−15Removing 0 doesn't change the value,so remove it from the expression −15 h(0)=−15Solution (0,−15) Show Solution Graph