Question

Graph x2 + 9y2 = 25. What are the domain and range?

Someone please help me !
(Picture below)

Answer 1

the equation is equivalent to x2/25 + y2/(25/9)= 1, it is an ellipse equation
the center is C(0,0)
a=5; b= 5/3, so a>b it is a horizontal major axis type (the x-axis)
all that you do is to find all characteristics by following all required formula