Refer to the information provided in Figure 1.2 below to answer the question(s) that follow. Figure 1.2
-If the slope of a straight line is -3. and if Y (the variable on the vertical axis) decreases by 6, then X (the variable on the horizontal axis) will
A) increase by 2.
B) decrease by 2.
C) increase by 18.
D) decrease by 18.

Question

Refer to the information provided in Figure 1.2 below to answer the question(s) that follow.  Figure 1.2
-If the slope of a straight line is -3. and if Y (the variable on the vertical axis) decreases by 6, then X (the variable on the horizontal axis) will
A) increase by 2. 
B) decrease by 2. 
C) increase by 18. 
D) decrease by 18.

Quizplus · Accepted Answer

The slope of a line is defined as the change in Y divided by the change in X. Given a slope of -3, if Y decreases by 6 (a change of -6), to maintain the slope of -3, X must increase by 2. This is because slope = change in Y / change in X = -6 / 2 = -3.

Refer to the Information Provided in Figure 1