Chapter 1, Equations and Graphs - Section 1.2 - Graphs of Equations in Two Variables; Circles - 1.2 Exercises - Page 101: 5

a) $(a,-b)$ b) $(-a,b)$ c) $(-a,-b)$

a) $(a,-b)$ because we flip the y-coordinate when reflecting across the x-axis b) $(-a,b)$ because we flip the x-coordinate when reflecting across the y-axis c) $(-a,-b)$ because we flip both the x and y-coordinate when reflecting across the origin