Use substitution to solve the system of linear equations. In your final answer, include all of your work. y = 3x - 9

Which of the following would represent the sum of 3 consecutive integers if x is the first integer?

Which is a true statement comparing the graphs of x^2/6^2-y^2/8^2 = 1 and x^2/8^2-y^2/6^2 the foci of both graphs are the same points. the lengths of both transverse axes are the same. the directrices of = 1 are horizontal while the directrices of = 1 are vertical. the vertices of = 1 are on the y-axis while the vertices of = 1 are on the x-axis.

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?