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The y-intercepts in the examples were described as convenient because they had values that were:
AIntegers
BFractions
CNegative
DIrrational
Answer & Solution
Correct answer: A. Integers
1. Whole-number coordinates are easier to read off a graph.
2. Slope needs two points that can be read accurately.
3. In the last two examples, the lines had y-intercepts with integer values.
4. That made the y-intercept convenient to use as one of the points.
_Source: OpenStax Elementary Algebra 2e (CC BY 4.0), Ch 4 'Graphs', sections 4.1-4.7_
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