it is given that y=(0,k) and (-3,11) are points on y=p-(x+n)^2 -show that the graph of fuction, where p and n are constant.find the value of p ,n ,and k
someone help
You're already half-way there mate. It's in the form $\displaystyle y=a(x+d)^2+e$, so to determine the turning, let $\displaystyle (x+d)=0$, and you'll determine the x-coordinate and y coordinate of the turning point of the parabola, compare with the graph to get the values of n and p.
Now set x=o, which sets y=k, from graph and substitute the values of n and p and you'll get your the value of k.