Hi! I would first like to greatly appreciate anyone who is willing to help with my problem. I also wasn't too sure where to post this as there was no designated quadratics forum. I have this question:
"The Sydney Harbour Bridge roadway is 504m long. There are vertical struts extending from the lower arch to the roadway (as shown in image). At the vertices, the lower arch is 118m above sea level and the upper arch is 73m above the roadway. Find the quadratic equations which describe the parabolas of the lower arch in vertex, intercept and general form."
I know to begin on vertex form, your h and k values are the x and y of the vertex. I have made the vertex of the lower arch (252, 118). This is because halfway of 504 is 252 and the 118m is given. Is this correct?
I am also stuck on where to go from there as I do not know any other value I could use. I have my x axis at sea level, however, would it be better to have my x axis at road level so I can use some x intercept points?
Any help would be greatly appreciated. Thank you!
"The Sydney Harbour Bridge roadway is 504m long. There are vertical struts extending from the lower arch to the roadway (as shown in image). At the vertices, the lower arch is 118m above sea level and the upper arch is 73m above the roadway. Find the quadratic equations which describe the parabolas of the lower arch in vertex, intercept and general form."
I know to begin on vertex form, your h and k values are the x and y of the vertex. I have made the vertex of the lower arch (252, 118). This is because halfway of 504 is 252 and the 118m is given. Is this correct?
I am also stuck on where to go from there as I do not know any other value I could use. I have my x axis at sea level, however, would it be better to have my x axis at road level so I can use some x intercept points?
Any help would be greatly appreciated. Thank you!