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Choose the line that is parallel to the line that contains the points (-5, 2) and (3, 4).

a. x + 4y = 5

b. -4x + y = -2

c. x - 4y = -4

User Mardochee
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1 Answer

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Final answer:

The equation x - 4y = -4 (option c) represents the line parallel to the line through the points (-5, 2) and (3, 4) because it has the same slope of 1/4.

Step-by-step explanation:

To determine which line is parallel to the line containing the points (-5, 2) and (3, 4), we first find the slope of this line. The slope m is calculated by the formula (y2 - y1) / (x2 - x1). For the given points, the slope is (4 - 2) / (3 - (-5)) = 2 / 8 = 1 / 4. A line parallel to another has the same slope. Now, we transform the given equations into slope-intercept form, y = mx + b, and compare slopes.

  • Equation a: x + 4y = 5 becomes 4y = -x + 5, and then y = -1/4x + 5/4 (slope is -1/4).
  • Equation b: -4x + y = -2 becomes y = 4x - 2 (slope is 4).
  • Equation c: x - 4y = -4 becomes -4y = -x - 4, and then y = 1/4x + 1 (slope is 1/4).

Only option c has the same slope of 1/4, therefore, the line represented by equation c, x - 4y = -4, is parallel to the line through the points (-5, 2) and (3, 4).

User TBhavnani
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