COORDINATE GEOMETRY CLASS 9 (1)

1. In the line segment pictured below, AB + CD = AD, and AB = BC. If AD = 15,what is the distance between the midpoints of AD and BC? Note: Figure may not be drawn to scale. (A) 0.5 (B) 1.5 (C) 3 (D) 4.5 (D) 7.5

2. Which of the following lines is perpendicular to y = 3x + 4 and has 6 for its x-intercept? (A) y = 3x – 6 (B) y = –3x + 6 (C) y = –x + 6 (D) y = –x – 2 (D) y = –x + 2

3. Which of the following inequalities is graphed below? (A) y > –2x – 2 (B) y ≥ –2x – 2 (C) y < –2x – 2 (D) y > x – 2 (D) y > –x – 2

4. The following equation represents which type of graph? 2y = –6x2 + 24x – 12 (A) A parabola that opens downward with vertex (–2 ,6) (B) A parabola that opens upward with vertex (6, 2) (C) A parabola that opens upward with vertex (–2, –6) (D) A parabola that opens downward with vertex (2, 6) (D) A parabola that opens downward with vertex (–6, 2)