karenwithdaManger karenwithdaManger

13-01-2022
Mathematics

contestada

Which of the following linear equations describes that relationship?
O A. f(x) = x + 3
B. f(x) = 3x - 1
C. f(x) = 2x + 1
O D. f(x) = 4x - 3

Which of the following linear equations describes that relationship O A fx x 3 B fx 3x 1 C fx 2x 1 O D fx 4x 3 class=

Respuesta :

mhanifa mhanifa

13-01-2022

Answer:

D. f(x) = 4x - 3

Step-by-step explanation:

Use two pairs of points to work out the equation:

(1, 1) and (2, 5)

Find the slope:

m = (5 - 1) / (2 - 1) = 4/1 = 4

Find the y-intercept:

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

The line is:

f(x) = 4x - 3

Correct choice is D

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