Question

2x + y = 8
x + y = 4
The lines whose equations are given intersect at


a.(4, 0)
b.(0, 4)
c.all points on the line

Answer 1

(a). Multiply second equation by 2, then subtract the first from that and you'll get y=0 +> x=4, ie. (0,4)

Answer 2

what about this one?

Solve the linear system.
x + y = -3
y = 2x

a.(-1, -2)
b.no solution
c.coincident

Answer 3

@b87lar can you help with this?

Answer 4

it is (a)