Mackenzie+&+Rachel



// Mackenzie’s Parabola // This parabola opens down, and its vertex is roughly (0,3). The line of symmetry for this parabola is an estimated x=0. The parabola’s domain is {XER/-1<x<1} and the range is {YER/-4<x<3}. This parabola is an image of the Gateway Arch, located in St. Louis, Missouri. The design of the Arch was chosen in a national architectural competition in 1947 from among 147 entries. My estimation was fairly close to the Autograph equation of the parabola, however mine was slightly wider and the vertex was shifted to the left by a millimeter. This was to be expected though, as I found out after I had chosen it that it was not a //true// parabola. Therefore, the vertex of my equation was going to be off from the actual image.

= Rachel's Parabola = = ﻿ = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =   Properties

Cool Fact:
This is a picture of a gateway in Prague that my dad took over the summer. It was one of about 50 pictures he took of doors and gateways. Write-up: My estimated parabola did not come very close to the one autograph created. I think I could probably have estimated the second point that I used to find stretch. Because the seond point was a little off, my stretch was off, which made the parabolas unequal.