Determine if x^(2)+y^(2)=9 is a function by graphing and using the Vertical Line Test.(1 point)
1. This equation is a function
2. This equation is NOT a function
1 answer
The equation x^2 + y^2 = 9 represents a circle centered at the origin with a radius of 3. When graphed, this equation will not pass the vertical line test, meaning that there are points on the graph where a vertical line intersects the curve at more than one point. Therefore, this equation is NOT a function.