Determine whether f: zx z → z is one-to-one? is onto?
a) f(m, n) = 2m -n.
b) f(m, n) = m2 -n2.
c) f(m, n)=m +n +1.
d) f(m, n) = \m| - inl.
e) f(m, n) = m2 - 4.

Hurry and answer this! circle x with a radius of 6 units and circle y with a radius of 2 units are shown which steps would prove the circles similar? translate the circles so they share a common center point, and dilate circle y by a scale factor of 4. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 4. translate the circles so they share a common center point, and dilate circle y by a scale factor of 3. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 3

Solve the system of equations y= 3/2 - 1, -x+ y =-3

We just started the introduction into circles and i have no idea how to do this.