FTCE Mathematics Test with Verified Solutions

Classify the following: 3x + 2y = 6 -2x + 3y = 12 A. Parallel B. Perpendicular C. Parallel and intersecting D. Concurrent - B. Perpendicular Use the formula Y = MX + B That makes the lines: Y=-3/2x + 3 Slope=-3/2 Y=2/3x +6 Slope=2/3 The slopes are the exact opposite of each other so they are perpendicular Solve: 5x - 7 _ 2x - 10 A. X _ 1 B. X _ -1 C. X _ 1 D. X _ -1 - B. X _ -1 Get X on one side of the equation by subtracting 2X from both sides and adding seven to both sides. 5x - 7 _ 2x -10 -2x from both sides 3x -7 _ -10 Add 7 to both sides 3x _ -3 Divide both sides by 3 X _ -1 Over the course of the school year in the JROTC class, Jennifer logged the following total of pull-ups: 2, 3, 22, 23, 23, 6, 8, 7, 9, 11, and 13. If she wanted to show the best looking result, which measure of central tendency will she use? A. Mean B. Median C. Mode D. Range - C. Mode