Y; -2x + 4y = 10x - 40l

Which values for a and b will create infinitely many solutions for this system of equations? ax-y=8 2x+y=b

Look at arnold's attempt to solve the equation for b: 3b = 12 b = 3 · 12 b = 36 describe the mistake that arnold made.

What is the difference between the equations of a vertical and a horizontal line?