Raymond B. answered • 02/22/21
Tutor
5
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Math, microeconomics or criminal justice
No. It's not a function.
each x value has 2 y values. You can draw a vertical line through the graph and cut it in 2 places. That's the "vertical line" test for a function.
y^2 - x^2 = 16 is graphically a hyperbola. hyperbolas are not functions
solve the equation for y
y^2 = 16+x^2
y = + or - square root of (16+x^2)
the + or - means two values of y for any value of x. That's not a function. For a function there should only be one value of y for a given value of x
