Find the Parallel Line Equation Through Point (-3, -4)

Question

Given the line parallel to the line y=2x5 y=2x-5

and passes through the point (3,4) (-3,-4) .

Which of the algebraic representations is the corresponding one for the given line?

Video Solution

Solution Steps

00:00 Find the algebraic representation of the function
00:03 The slope of the line equals 2
00:08 Parallel lines have identical slopes
00:20 Let's use the line equation
00:23 Let's substitute the point according to the given data
00:32 Let's substitute the line's slope according to the given data
00:39 Let's continue solving to find the intersection point
00:45 Let's isolate the intersection point (B)
00:52 This is the intersection point with the Y-axis
00:56 Now let's substitute the intersection point and slope in the line equation
01:12 And this is the solution to the question

Step-by-Step Solution

To solve this problem, follow these steps:

  • Step 1: Identify the given line's slope. The given line is y=2x5 y = 2x - 5 , which has a slope of 2 2 .
  • Step 2: Since the line we want is parallel, it will have the same slope, m=2 m = 2 .
  • Step 3: Use the point-slope formula, yy1=m(xx1) y - y_1 = m(x - x_1) . Given point is (3,4)(-3, -4).
  • Step 4: Substitute m=2 m = 2 , x1=3 x_1 = -3 , and y1=4 y_1 = -4 into the point-slope formula:
    y(4)=2(x(3)) y - (-4) = 2(x - (-3))
  • Step 5: Simplify the equation:
    y+4=2(x+3) y + 4 = 2(x + 3)
  • Step 6: Distribute the 22:
    y+4=2x+6 y + 4 = 2x + 6
  • Step 7: Solve for y y :
    y=2x+64 y = 2x + 6 - 4
  • Step 8: Simplify further:
    y=2x+2 y = 2x + 2

The corresponding equation of the line parallel to y=2x5 y = 2x - 5 and passing through (3,4)(-3, -4) is y=2x+2 y = 2x + 2 . When compared to the choices given, the correct choice is:

y=2x+2 y=2x+2

Answer

y=2x+2 y=2x+2