Question

A point (x+2) ( x+4) lies in the first quadrant ,the mirror image for x axis is (5,-7) What is the value of x?

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Answer 1

Answer:

A point in the first quadrant, (x,y) is reflected across the first quadrant, therefore, in the fourth quadrant, by negating the y value, so (x,-y) reflects across the x-axis. The point (5,-7) is in the fourth qudrant, and its reflection across the x-axis is (5,7), so the x value that makes the x- coordinate (x+2) 5 is 3, and what makes the y-coordinate (x+4) 7 is 3.