Graph linear and quadratic functions and identify intercepts, maxima, and minima.
Identify x-intercepts of a linear or quadratic function
Problem
Identify the \(x\text{-}\text{intercept}\) of the function \(y=2x-8\).
Big Picture
What this problem is really about
An x-intercept is an input that makes the function’s output zero. We’ll impose that x-axis condition, solve for the input, write the result as a full ordered pair, and substitute it back to confirm that it really produces zero output.
Inside Gozunta
Turn the preview into practice.
More than a preview
Gozunta lets you study this problem—and more than 10,000 others.
Create targeted learning sessions, use hints, check your answer, read the walkthrough, watch the video, print the work, and track your progress.
