Intersection 74914

Find the perimeter of triangle ABC, where point A begins the coordinate system. Point B is the intersection of the graph of the linear function f: y = - 3/4• x + 3 with the x-axis, and C is the intersection of the graph of this function with the y-axis.

Correct answer:

o =  12 cm

Step-by-step explanation:

A=(0,0) B: y1=0  y1=3/4 x1+3 0=3/4 x1+3  3x1=12  x1=312=4  x1=4  B=(4,0)  C: x2=0 y2=3/4 x2+3=3/4 0+3=3 C=(0,3)  a=BC ; b =AC; c = AB  a=(x1x2)2+(y1y2)2=(40)2+(03)2=5 cm b=y2=3=3 c=x1=4=4  o=a+b+c=5+3+4=12 cm

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