The y-intercept is the point where a graph intersects the y-axis. It represents the value of the dependent variable when the independent variable is zero.
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In kinematics, the y-intercept often corresponds to the initial position or velocity in one-dimensional motion graphs.
Is always found by setting the independent variable (often time) to zero and solving for the dependent variable.
For a position-time graph, the y-intercept represents the initial position of an object.
For a velocity-time graph, it represents the initial velocity of an object.
Can be positive, negative, or zero depending on where the graph crosses the y-axis.