Finish the equation that satisfies the given conditions. The slope is -1 and the x-intercept is 3.
O y=-x-3
O y=-x + 3
O y=-3x

What is the value of x? enter your answer in the box. (cm)

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

In the figure below, ∠dec ≅ ∠dce, ∠b ≅ ∠f, and segment df is congruent to segment bd. point c is the point of intersection between segment ag and segment bd, while point e is the point of intersection between segment ag and segment df. the figure shows a polygon comprised of three triangles, abc, dec, and gfe. prove δabc ≅ δgfe.