Which coordinate is not a point on the graph?

Answer: Option b.
Step-by-step explanation:
To solve this problem you can substitute the points shown in the options into the equation, if the point is on the graph the result must be 1:
a. [tex]\frac{(-6)^{2}}{25}-\frac{(\frac{3\sqrt{11}}{5})^{2}}{9}=1[/tex] (It is on the graph).
b.[tex]\frac{(6)^{2}}{25}-\frac{(\frac{5}{3\sqrt{11}}^{2})}{9}=1.41[/tex] (It is not on the graph).
c. [tex]\frac{(-6)^{2}}{25}-\frac{(-\frac{3\sqrt{11}}{5})^{2}}{9}=1[/tex] (It is on the graph).
d. [tex]\frac{(-6)^{2}}{25}-\frac{(\frac{-3\sqrt{11}}{5})^{2}}{9}=1[/tex] (It is on the graph).
The answer is the option b.