In 39-50, the graph of an equation is given. (a) Find the intercepts. (b) Indicate whether the graph is symmetric with respect to the x-axis, the y-axis, or the origin. 3 3 x

M303 Section 2.1 Notes- Matrix Operations 10-5-16 Recall if is × matrix, ientry denoted as = Diagonal entries of - subscripts are sam11 ie22 ,…, Diagonal matrix- if is square × matrix, its off-diagonal entries e 0s; only nonzero o Ex. Any identity matrix 1 0 0 0 o Ex.[0 2 0 0 ] still diagonal; diagonal entries can be anything 0 0 0 0 0 0 0 1 Zero matrix- any size, all entries 0; denoted 0 Add/scalar multiply matrices