Solving y = x²: Does a Point Exist Where y = -2?

Question

Given the function:

y=x2 y=x^2

Is there a point for ? y=2 y=-2 ?

Video Solution

Step-by-Step Solution

To solve this problem, we'll follow these steps:

  • Step 1: Analyze the equation y=x2 y = x^2 .
  • Step 2: Investigate whether a negative y y -value is possible.

Now, let's work through each step:
Step 1: The function we have is y=x2 y = x^2 . This function is defined for all real numbers and always gives a non-negative value y y because squaring a real number cannot result in a negative number.

Step 2: We need to check whether y=2 y = -2 is possible by solving x2=2 x^2 = -2 . In the real number system, no real number x x satisfies this equation since the square of any real number is non-negative.
Therefore, there is no real point where y=2 y = -2 on the graph of the function y=x2 y = x^2 .

Therefore, the solution to the problem is No.

Answer

No