How are the graphs of y=2x+1 and y=-2x+1 similar? how are they different?

If g(x) is an odd function, which function must be an even function?

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (-1+i)+(21+5i)+0