11th grade math
posted by Andy on .
The equation Ax^2 + 4y^2 = 16 represents an ellipse. Find all values of A such that its intersection with y = x has coordinates (x,y) which are integers.

what is the perimeter of the smaller triangle
posted by Andy on .
The equation Ax^2 + 4y^2 = 16 represents an ellipse. Find all values of A such that its intersection with y = x has coordinates (x,y) which are integers.
what is the perimeter of the smaller triangle