If x=8 and y=6 find the value of x- 4y

X+ y = 5 ; x - y =3 solve using linear combination

Atorch and a battery cost 2.50 altogether.the torch costs 1.50 more than the battery.what fraction of the total price is the torch? give your answer in its simplest form.

Segment wx is shown explain how you would construct a perpendicular bisector of wx using a compass and a straightedge