The area bounded by the line y = 2x – 2, y = -x and x-axis is given by
Correct Answer :
None of these
Solution :
The correct option is None of these.
To find the area bounded by the lines , , and the x-axis (), we first find the intersection points of these boundary lines.
Step 1: Find the intersection of the two lines
Set the equations equal to each other to find the x-coordinate:
Add to both sides and add to both sides:
Now substitute back into :
Thus, the point of intersection is:
Step 2: Find the intersections with the x-axis (where )
For the line :
This gives the intersection point .
For the line :
This gives the intersection point .
Step 3: Calculate the area of the bounded triangular region
The region forms a triangle with vertices at , , and .
Since and both lie on the x-axis, the base of the triangle lies along the x-axis:
The height of the triangle is the perpendicular distance from vertex to the x-axis, which is the absolute value of its y-coordinate:
Using the formula for the area of a triangle:
Since the area is sq. units, which does not match any of the given choices ("9/2 sq. units", "43/6 sq. units", or "35/6 sq. units"), the correct answer is indeed None of these.
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