The vertex of a parabola is the point where the parabola crosses its axis of symmetry. Therefore, the coordinates of the vertex is (2,4).
Denali- 6.7x70= 469
The building should be strong enough to withstand an earthquake of that magnitude.
Rat Island- 7.8x30=234
The building should be string enough to withstand an earthquake of that magnitude.
Hope this helps! ;)
4 divided by 6 is 0.6666666667
