My notes rotate the axes to eliminate the xy-term in the equation. then write the equation in standard form. (use xp for x' and yp for y' in your answer. rotate the coordinate axes through an angle θ with 0 ≤ θ ≤ π/2.) 2x2 – 3xy – 2y2 + 45 = 0

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

Which of the following correctly justifies statement four of the two column proof? a. corresponding angles theorem b. transitive property of equality c. vertical angle theorem d. substitution property of equality