Definition: The graphical method involves locating points on a coordinate plane where the y-coordinate (image) corresponds to the given value.

Highlight: When finding antecedents graphically, look for points where the function intersects with a horizontal line at the given y-value.

Example: Using the function g$x$ = -3x - 2, the process of solving g$x$ = 8 is demonstrated to find the antecedent.

Vocabulary: Ordinate - the y-coordinate of a point, representing the image value in function notation.

Quote: "Pour déterminer l'antécédent, il suffit de faire le calcul à l'envers" (To determine the antecedent, simply reverse the calculation).

Definition: An antecedent is the input value $x$ that produces a specific output value (f$x$) in a function.

Example: For the function f$x$ = 3x² + 2, when f(1) = 5, then 1 is the antecedent of 5.

Vocabulary: Image - the output value $y$ obtained when applying a function to an input value $x$.

Highlight: The page demonstrates how to use a value table to identify antecedents, showing that one value can have multiple antecedents.

Example: For function g$x$, g$-2$ = 3, showing how to find antecedents using a table of values.