Rate constant k for a certain reaction is measured at two different temperatures.
Temp
91.0c
11.0c
K-2.2x10^8. 4.8x10^5. Calculate ea , round two significant digits

Whose mistake? can you give more details to what the question is asking?

Idon't see any graph, however the graph of the function : f(x) = x²-2x+3 is a parabola: 1) open upward (since a> 0)2) it intersects y-axis in 3 (y=3)3) its axis of symmetry is x = +1 ( -b/2a)4) it's minimum is y = -2, so its vertex is (1,-2)5) it doesn't intersect the x-axis since discriminant < 0