4x^2+25y^2=100

Domain of an ellipse is x ∈ [-a,a] and Range of an ellipse is y ∈ [-b,b].
So, given equation is an Ellipse where Domain is x ∈ [-5,5] and Range is y ∈ [-2,2].
Do you have a picture of the whole question?
The absolute value of 14 is 14.l
Hope it helps :)