How to do questions a and b?

enter image source here 8F)

1 Answer
Feb 2, 2018

y=2.25x" and "24.622" Km"

Explanation:

"since O is the origin the equation will be in the form"

•color(white)(x)y=mx

"where m is the slope"

m=(Deltay)/(Deltax)=22.5/10=22.5/10=2.25

rArry=2.25x" is the equation of line"

OA=sqrt(10^2+22.5^2)larrcolor(blue)"Pythagoras' theorem"

color(white)(OA)~~24.6221.." Km

color(white)(OA)=24.622" Km to nearest metre"