suppose a parabola has an axis of symmetry at x=-7, a maximum height of 4 and also passes through the point (-6,0). Write the parabola in vertex form.

Question

nikato · Answer

Do u know what the vertex form of a parabola is?

anonymous · Answer

no clue. im thinking the answer was y=a(x-h^2)+k where a= -7, h= 2/7, and k= -38/7

nikato · Answer

No, the numbers r incorrect. And btw, thats^ called the vertex form of a parabola equation

campbell_st · Answer

well you know the vertex.... its x = -7 and y = 4

the line of symmetry and max value for y are the vertex

so using your formula h = -7 and k = 4

substitute the point (-6, 0) to find the value of a. 

hope this helps

campbell_st · Answer

oh, the parabola is concave down... because the question mentions maximum... y = 4

anonymous · Answer

thanks guys. i appreciate your help!