Slope = 2 for a line on a graph with x on the horizontal axis and y on the vertical axis.If x decreases by 4, what happens to y?
A) y decreases by 8.
B) y decreases by 4.
C) y increases by 8.
D) y increases by 4.

Question

Slope = 2 for a line on a graph with x on the horizontal axis and y on the vertical axis.If x decreases by 4, what happens to y?  
A) y decreases by 8. 
B) y decreases by 4. 
C) y increases by 8. 
D) y increases by 4.

Quizplus · Accepted Answer

The slope of a line is defined as the change in y divided by the change in x. A slope of 2 means that for every 1 unit decrease in x, y decreases by 2 units. Therefore, if x decreases by 4 units, y decreases by 2*4 = 8 units.

Slope = 2 for a Line on a Graph with X