AlgebraEasyFunction with a negative slope
Algebra practice question
Which of the following linear functions has a graph with a negative slope?
- A. f(x) = 5 − 2xCorrect
- B. f(x) = 2x + 5
- C. f(x) = 2x − 5
- D. f(x) = 5 + x/2
Answer: A. f(x) = 5 − 2x
5 − 2x has slope −2.
Why the other answers are wrong
- B. f(x) = 2x + 5
- Slope 2.
- C. f(x) = 2x − 5
- Slope 2; the −5 is the intercept.
- D. f(x) = 5 + x/2
- Slope 1/2.
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