in this problem, you can take advantage of the property of elimination subtract the bottom equation from the top equation x+6y=15 - -x+4.=5 ----------------- 0x+2y=10 you then divide both sides by 2
y=5
now that you know what y equals, plug it into one of the equations and solve for x.
x+6(5)=15 x+30=15 subtract 30 from both sides x=-15
the final answer is x= -15 y = 5 aka the coordinate (-15,5)
