Question 59979
Please show me the graph for the equations: Solve each system of equation by graphing.  

Y = 2x-4 my points are X and Y (0, -4), (3, 2), (5, 6)

y = -4 X + 2 my points are X and Y (0, 2), (3, -10)***, (2, -6)
*** I corrected that point:
y=-4(3)+2
y=-12+2
y=-10 not positive 10, that's probably what is confusing you.
y=2x-4 looks like this after you connect all the points:
{{{graph(300,200,-10,10,-10,10,2x-4)}}}
When you graph the second line y=-4x+2 you get this:
{{{graph(300,200,-10,10,-10,10,2x-4,-4x+2)}}}
They intersect at: (x,y)=(1,-2)
Happy Calculating!!!