Practice Test

Question 8 • Mathematics 8

Which trend line properly describes the data relationship in the scatterplot?

Answer

Image with description A scatterplot is shown on a first quadrant coordinate plane. The x axis ranges from 0 to 7 in increments of 1. The y axis ranges from 0 to 5 in increments of 1. There is a point at (1 comma 1 point 2). There is a point at (2 comma 2 point 3). There is a point at (3 comma 3 point 2). There is a point at (4 comma 3 point 3). There is a point at (5 comma 4 point 2). There is a point at (6 comma 3 point 8). A line passes through (1 comma 2) and (3 comma 3).

Image with description A scatterplot is shown on a first quadrant coordinate plane. The x axis ranges from 0 to 7 in increments of 1. The y axis ranges from 0 to 5 in increments of 1. There is a point at (1 comma 1 point 2). There is a point at (2 comma 2 point 3). There is a point at (3 comma 1 point 2). There is a point at (4 comma 3 point 3). There is a point at (5 comma 4 point 2). There is a point at (6 comma 3 point 8). A line passes through (1 comma 1 point 2) and (6 comma 3 point 9).

Image with description A scatterplot is shown on a first quadrant coordinate plane. The x axis ranges from 0 to 7 in increments of 1. The y axis ranges from 0 to 5 in increments of 1. There is a point at (1 comma 1 point 2). There is a point at (2 comma 2 point 3). There is a point at (3 comma 1 point 2). There is a point at (4 comma 3 point 3). There is a point at (5 comma 4 point 2). There is a point at (6 comma 3 point 8). A line passes through (0 comma 4) and (5 comma 1).

Image with description A scatterplot is shown on a first quadrant coordinate plane. The x axis ranges from 0 to 7 in increments of 1. The y axis ranges from 0 to 5 in increments of 1. There is a point at (1 comma 1 point 2). There is a point at (2 comma 2 point 3). There is a point at (3 comma 1 point 2). There is a point at (4 comma 3 point 3). There is a point at (5 comma 4 point 2). There is a point at (6 comma 3 point 8). A line passes through (0 comma 5) and (5 comma 2).

Explanation

The points generally rise as x increases, so a suitable trend line should have a positive slope. Choice B’s line rises from about (1, 1.2) to (6, 3.9), matching the upward pattern and passing close to the data. Choices C and D slope downward, so they do not describe the relationship.

AI-written and checked against the verified answer.

More from this Course

Practice Test

Practice Test

Practice Test