Wut is 0.2 is 1/10 the value of?

Which representation has a constant of variation of -2.5

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Find the equation of the ellipse with the following properties. the ellipse with foci at (0, 6) and (0, -6); y-intercepts (0, 8) and (0, -8).edit: the answer is x^2 over 28 + y^2 over 64 = 1