Mathematics for IGCSE & O level - Sketching Curves (Section 4 - No. 21)
How do you find the x-intercept(s) of a function?
Substitute x=0 and solve for y.
Substitute y=0 and solve for x.
The x-intercept(s) are the roots of the equation.
Set the equation to an inequality.
Explanation
The x-intercepts are roots, and are found by setting y=0 and solving.
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