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D771 / D 771 Objective Assessment (Latest Update 2025 / 2026) Quantitative Literacy | Questions & Answers | Grade A | 100% Correct - WGU
Question:
What is a linear function?
Answer:
A function that forms a straight line, written as y = mx + b.
Question:
In y = mx + b, what does m represent?
Answer:
The slope (rate of change).
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Question:
In y = mx + b, what does b represent?
Answer:
The y-intercept (starting value).
Question:
Example: $2000 setup fee + $30 per person. Function?
Answer:
y = 30x + 2000.
Question:
What is linear growth?
Answer:
Increase by the same fixed amount each step.
Question:
What is exponential growth?
Answer:
Increase by the same fixed percentage each step.
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Question:
Linear growth recursive formula?
Answer:
Pn = Pn−1 + d.
Question:
Linear growth explicit formula?
Answer:
Pn = P0 + dn.
Question:
Exponential growth explicit formula?
Answer:
Pn = P0(1 + r)^n.
Question:
Example of linear growth: 437 bottles + 32/year. Formula?
Answer:
Pn = 437 + 32n.
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