On a coordinate graph with y on the vertical axis and x on the horizontal axis,suppose point A represents co-ordinates (x = 2,y = 16)and point B represents coordinates (x = 10,y = 4).What is the slope of the straight line joining points A and B?
A)0.75
B)-0.75
C)1.5
D)-1.5
E)-0.43

Question

Quizplus · Accepted Answer

The slope of the line passing through points (x1, y1) and (x2, y2) is given by the formula: 
slope = (y2 - y1)/(x2 - x1)

Using the coordinates of points A and B: 
slope = (4 - 16)/(10 - 2) 
slope = -12/8 = -1.5

Therefore, the slope of the line joining points A and B is -1.5.

On a Coordinate Graph with Y on the Vertical Axis