The slope of a line through points (2 3) and (4 7) is?
A
1
B
2
C
3
D
4
Correct Answer: Option B — 2
Explanation:
Slope = (y₂-y₁)/(x₂-x₁) = (7-3)/(4-2) = 4/2 = 2. The slope formula measures the steepness and direction of a line. Positive slope rises left to right. Slope is fundamental in coordinate geometry forming the basis for line equations parallel lines perpendicular lines and linear modeling.