In the diagram below, PQ is parallel to MN. Solve for 2. Round your answer to the nearest tenth if necessary.

X=

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

Graph the system of equations. {6x−4y=−244x−8y=−32 use the line tool to graph the lines.

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (–4, 0) and (6, 0). the y-intercept of the first parabola is (0, –12). the y-intercept of the second parabola is (0, –24). what is the positive difference between the a values for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth