Which statement describes a relationship between these equations? equation 1: y = 3x − 7 equation 2: y = -4x − 7 A. The equations have the same y-intercept. B. The equations have the same slope. C. Each equation represents a line that decreases from left to right. D. Each equation represents a line that increases from left to right.

Given: abcd is a square. prove: ac ? bd. we are given that abcd is a square. if we consider triangle aeb and triangle aed, we see that side is congruent to side ad because sides of a square are congruent. we know that side ae is congruent to side ae by using the . finally, we know that side de is congruent to side because the diagonals of a square bisect each other. therefore, triangle aeb is congruent to triangle aed by congruency. we see that angle aed and angle aeb are a linear pair, and congruent by cpctc. thus, the measure of these angles will be 90°, and diagonal ac is perpendicular to diagonal bd by the .