Graph linear and quadratic functions and identify intercepts, maxima, and minima.
Find the y-intercept from a linear or quadratic function or graph
Problem
Identify the \(y\text{-}\text{intercept}\) of the function \(y=3x-7\).
Big Picture
What this problem is really about
A y-intercept records the function’s output at a zero input. We’ll apply that vertical-axis condition to the whole rule, simplify the output carefully, and preserve the coordinate order when writing the intercept as a point.
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