T twins12 New member Joined Feb 12, 2010 Messages 9 Feb 14, 2010 #1 Find all real number solutions to the system of equations: xy=4 y=4x List your answers as pairs (x,y)
Find all real number solutions to the system of equations: xy=4 y=4x List your answers as pairs (x,y)
T tutor_joel Junior Member Joined Feb 6, 2010 Messages 157 Feb 14, 2010 #2 solve by substitution. there will be 2 paired answers. ie. eq1. xy=4 eq2. y=4x substitute 4x from eq2 into eq1 for the value of y. Yeilding, x(4x)=4 you have it from here?
solve by substitution. there will be 2 paired answers. ie. eq1. xy=4 eq2. y=4x substitute 4x from eq2 into eq1 for the value of y. Yeilding, x(4x)=4 you have it from here?
