Exhibit 1A-2 Straight line

In Exhibit 1A-2, explain the slope of straight line CD.
A) As the X value increases by 20, the Y value increases by 5, so the slope is 4.
B) As the Y value increases by 5, the X value increases by 20, so the slope is 1/4.
C) As the X value increases by 10, the Y value increases by 5, so the slope is 2.
D) As the Y value increases by 5, the X value increases by 10, so the slope is 1/2.

Question

Exhibit 1A-2 Straight line

In Exhibit 1A-2, explain the slope of straight line CD.
A) As the X value increases by 20, the Y value increases by 5, so the slope is 4. 
B) As the Y value increases by 5, the X value increases by 20, so the slope is 1/4. 
C) As the X value increases by 10, the Y value increases by 5, so the slope is 2. 
D) As the Y value increases by 5, the X value increases by 10, so the slope is 1/2.

Quizplus · Accepted Answer

The slope of a straight line is the change in y divided by the change in x, which is represented by the formula (y2-y1)/(x2-x1). In this case, for the segment CD, as the Y value increases by 5, the X value increases by 10, so the slope is (Y2-Y1)/(X2-X1) = 5/10 = 1/2. Therefore, the correct answer is D.

Exhibit 1A-2 Straight Line