Y = x - 1 y = 2x + 2

When solving the system of equations (shown above) using substitution, the solution to the system is:

1. (3,2)

2. (4,3)

3. (-3,-4)

4.(-4,-3)

5. (2,-3)

6. (-3,2)

Given the box plot, will the mean or the median provide a better description of the center? box plot with min at 10.5, q1 at 11.5, median at 12.5, q3 at 13.5, max at 15

Which statement justifies why angle ebc measures 90?

In the following diagram it is given that dec,ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2