Line through the points (-2, 6) and (4, 8) is perpendicular to the line through the points (8, 12) and (x, 24). Find the value of x.

Answer: The value of xx is 44.

Step-by-step solution

Step 1: Calculate the slope of the first line

To find the slope of the first line, we use the given points (−2,6)(-2, 6) and (4,8)(4, 8). The formula for the slope mm between two points (x1,y1)(x_1, y_1) and (x2,y2)(x_2, y_2) is m=y2−y1x2−x1m = \frac{y_2 - y_1}{x_2 - x_1}. Substituting the coordinates, we get the slope of the first line.

Step 2: Calculate the slope of the second line

Similarly, we calculate the slope of the second line using the points (8,12)(8, 12) and (x,24)(x, 24). We apply the same slope formula to these points. This will give us an expression for the slope m2m_2 in terms of xx.

Step 3: Apply the condition for perpendicular lines

Two lines are perpendicular if the product of their slopes is −1-1. We have calculated m1=13m_1 = \frac{1}{3} and m2=12x−8m_2 = \frac{12}{x-8}. We set their product equal to −1-1 to form an equation that we can solve for xx.

Step 4: Solve for x

Now we solve the equation for xx. We simplify the product of the slopes, then multiply both sides by (x−8)(x-8), and finally isolate xx to find its value. This gives us the required coordinate for the second line.

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