We have the function f(x)=x²
Let y = x² We have to find out the x-intercept and the y-intercept
an x-intercept is a point on the graph where y=0 ⇒ x²=0 ⇒ x=0 ⇒ O(0,0) - x-intercept
a y-intercept is a point on the graph where x=0 ⇒y=0 ⇒ O(0,0) - y-intercept
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The function has only one intercept : O(0,0) as it is shown in the graph below ↓