Mathematics for IGCSE & O level - Graphs Of Functions (Section 5 - No. 28)
If you are given the graph of a function, how can you solve an equation graphically?
By finding the x-intercepts.
By finding the y-intercepts.
By drawing a horizontal line at the value of y and finding intersection points.
By drawing a vertical line at the value of x and finding intersection points.
Explanation
The solutions of the equation are found by looking for where the line intersects the graph.
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