The judgment of quadratic function in the third grade of junior high school If you look at the image of y = x, which of the following judgments is correct A. If a and B are opposite to each other, then the function values of x = A and x = B are equal B. For the same independent variable x, there are two function values corresponding to it C. For any real number y, there are two X's corresponding to it D. For any x, there is Y > 0

The judgment of quadratic function in the third grade of junior high school If you look at the image of y = x, which of the following judgments is correct A. If a and B are opposite to each other, then the function values of x = A and x = B are equal B. For the same independent variable x, there are two function values corresponding to it C. For any real number y, there are two X's corresponding to it D. For any x, there is Y > 0

A
For B, a variable can only have one wrong function value
For C real number y = 0, there is only one X = 0 and corresponding error
For D x = 0, y = 0 is wrong