Given that the image of the positive ratio function passes through the point (- 2,5), makes a vertical line to the x-axis through the point a on the image, the perpendicular foot is B, and s △ AOB = 25, the coordinates of point a are obtained Come on! ~ ~ ~ have a solution
Positive proportion function, is the o point. With two points, it is easy to do. K = - 2.5
S△AOB=AO×OB/2=2.5OB*OB/2=25
OB=2√5
OA=5√5
A:(-2√5,5√5)
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