Question 1:

An ellipse or hyperbola uses the general form Ax- + Cy + Dx + Ey + F =0. Solving for 5 unknowns (A, B, C, D, E, F) requires 5 equations, needs 5 points given. But if one of the coefficients is divided out (A or C), then only 4 coefficients remain and only 4 points are needed. x 2 + Cy + Dx + Ey + F=0 Given 4 points on a vertical ellipse (-1, -5.473), (0, 0.918), (1, 1.107), and (2.753, 0). Select the missing coefficients (answers have been rounded to the nearest tenth). + [ Select ] + [ Select ] v X+ [ Select ] V+ [ Select ] V = 0In the process of finding the inverse of the following matrix, explain the indicated row operation. 2 1 -4 1 0 0 1 2 -3 0 1 0 3 5 -70 0 Step 1: Switch row 1 and row 2. 2 -30 1 0 Answer to Step 1: |2 1 -4 1 0 0 3 5 -70 0 Step 2: Explain the row operation to change the answer from Step 1 to the result below. 2 -3 0 O Answer to Step 2: 0 2 1 0 3 5 -70 0