To complete the statements about the fighter jet's descent based on the graph showing altitude over time, we can fill in the choices as follows:
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The y-intercept of the linear function is the initial altitude of the jet and represents the altitude at time zero (the height from which the jet starts its descent).
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The rate of change is negative (since altitude is decreasing) and represents the rate at which the jet is descending over time (usually in hundreds of feet per minute).
If you have specific values from the graph, you might substitute those numerical values into the statements. However, based on the standard interpretations, the choices above should fit well.