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# GRAPHS

CONTENT

1. Interpreting Information Presented on a Graph (gradient; vertical and horizontal lines; intercepts with axes).
2. Continuous and Discontinuous Graphs
3. Linear Graphs from Real Life Situations (Distance-Time graph; Travel graph; Conversion graph; Velocity-Time graph).

## Interpreting Information Presented on a Graph

Example 1:

The figure below shows the graph of y against x. (a) Write down the coordinates of the points A and B

(b) What is the y- intercept of the straight line in the graph above?

(c) Find the coordinate of the point where the graph intersects the x-axis.

(d) Find: (i) x, when y= 2.4  (ii) y, when x = 1.2.

Solution:

(a) The coordinates of A = (1, 2) and B = (3, 0). The first value is for x while the second is for y, i.e.,(x, y).

(b) The y-intercept is the value of y the point the straight line intersects (cuts) the y-axis.

y-intercept = 3

c) The graph intersects the x-axis at point B = (3, 0).

Lesson tags: JSS2 Mathematics, JSS2 Mathematics Evaluation Questions, JSS2 Mathematics Evaluation Questions Second Term, JSS2 Mathematics Objective Questions, JSS2 Mathematics Objective Questions Second Term, JSS2 Mathematics Second Term, Mathematics Lesson Notes, Mathematics Objective Questions
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