Aline that goes through the origin and the point (10, 5) what is the slope

Let the line be y= mx+C  

Passes through origin i.e (0,0)  

Hence 0= m×0+C →C=0  

Hence line becomes y= mx  

Passes through origin i.e (10,5)  

Hence 5= m×10→m=5/10= 0.5  

Hence line becomes y=0.5 x

the forst and 3rd

step-by-step explanation:

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6