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egoroff_w [7]
2 years ago
10

Which of the following linear equations describes that relationship?

Mathematics
1 answer:
JulsSmile [24]2 years ago
8 0

Answer:

  • D. f(x) = 4x - 3

Step-by-step explanation:

<u>Use two pairs of points to work out the equation: </u>

  • (1, 1) and (2, 5)

<u>Find the slope:</u>

  • m = (5 - 1) / (2 - 1) = 4/1 = 4

<u>Find the y-intercept:</u>

  • 1 = 4*1 + b
  • b = 1 - 4
  • b = - 3

<u>The line is:</u>

  • f(x) = 4x - 3

Correct choice is D

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Answer: the value of her investment after 4 years is £8934.3

Step-by-step explanation:

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