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To find the x-intercept of a line from its equation, what do you do?
ALet x equal 0 and solve the equation for y
BLet x equal y and solve the equation for both
CLet y equal the constant term and solve for x
DLet y equal 0 and solve the equation for x
Answer & Solution
Correct answer: D. Let y equal 0 and solve the equation for x
1. The method states that to find the x-intercept, let y equal 0 and solve the equation for x.
2. Letting x equal 0 instead is the method used to find the y-intercept, not the x-intercept.
3. Setting x equal to y, or setting y equal to the constant term, are not part of the stated method at all.
_Source: OpenStax Elementary Algebra (CC BY 4.0), Ch 4 "Graphs", section 4.3 Graph with Intercepts_
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