Answer:
(B)
Step-by-step explanation:
Given: A triangle whose coordinates are (0,0), (x1 y1) and (x2 y1)
To find: The area of the triangle.
Solution: We know that Area of triangle= 1/2 [tex]basexheight[/tex]
Now, Base= [tex]\sqrt{x2 - x1 ^2 + y1 -y1}[/tex]
Base= x2 -x1[tex]\sqrt{0 - 0^2 + y1 - 0} ^{2}[/tex]
And height= y1
Height= y1
Therefore, area of triangle= 1/2 [tex]x[/tex] (x2 -x1) [tex]x[/tex] y1
Area of triangle= 1/2y1 (x2 -x1)
