Interpreting Y-Intercept in Context
Learn to interpret the initial value or y-intercept of a trend line within contextual situations. Understand what the starting point signifies in scatter plot data.
Questions
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MultiChoice
In the taxi fare equation y = 2.50x + 3.00 (x = miles, y = total cost), what does 3.00 represent?
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MultiChoice
A linear model y = 15x + 40 represents phone bill cost (y) for using x GB of extra data. What does 40 represent?
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MultiChoice
A plant height model is y = 0.5x + 4 (x = days, y = height in cm). What does 4 mean?
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MultiChoice
The model y = -0.8x + 25 represents remaining candle height in cm after x hours. What does 25 represent?
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MultiChoice
In a bakery profit model y = 3x - 50 (x = items sold, y = profit in dollars), what does -50 mean?
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MultiChoice
An equation y = 60x + 120 models total distance from home (y) in miles after driving x hours. What does 120 represent?
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MultiChoice
A student savings model is y = 20x + 100 (x = months, y = dollars saved). What does 100 represent?
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MultiChoice
The equation y = -2x + 80 represents water temperature (y) in Fahrenheit cooling over x minutes. What does 80 represent?
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MultiChoice
If a line of best fit passes through the origin (0, 0), what is its y-intercept?
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MultiChoice
A model y = 40x + 0 represents earnings without baseline pay. What does the y-intercept of 0 indicate?
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MultiChoice
The equation y = -5x + 50 models gas remaining in gallons after x hours of driving. What does 50 mean?
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MultiChoice
In a context graph, how do you locate the y-intercept?