Question

4.

a.

Which choice is a simultaneous solution of these two equations: 3x + 4y = 10 and 5x + 4y = 14

		x = -1, y = -2
		x = 2, y = 1
		y=2x
		x=y
		x=1,y=2

b.

Which choice is a simultaneous solution of these two equations: 30x + 40y = 100 and 50x + 40y = 140

		x=-1,y=-2
		x=2,y=1
		y=2x
		x=y
		x=1,y=2

c.

Which choice is a simultaneous solution of these two equations: 2x + y = 12 and x + 5y = 15

		x=5,y=2
		x=-5,y=2
		y=2x
		x=5,y=-2
		x=10,y=5

Answer 1

a) 5x+4y = 14 今

30x + 40y = 100 冫 T >