Question

Which of the following graph(s) is/are discrete graph(s)?

• A.
• B.
• C.
• D.

Answer 1

Answer: (A), (D)

Concept involved
Continuous graphs have a value of y for every single value of x, and each point is immediately adjacent to the point on either side of it, resulting in an uninterrupted graph line.

Discrete graphs show values along a number line at precise point. They might or might not indicate a trend or a direction. These graphs do not include any values that are not whole numbers.

Option(a):
This graph has no data between the points because buying fractional part of shirts (4.5 shirts) makes no sense.
Hence, it is a discrete graph.

Option(b):
This graph has value of y for every single value of x. Hence, it is continuous graph.

Option(c):
This graph has value of y for every single value of x. Hence, it is continuous graph.

Option(d):
This graph has no data between the points because fractional part of families (2.5 families) makes no sense.
Hence, it is a discrete graph.

Option (a) and (d) are correct.