Question

1. which item is not a required part of a complete graph?

a. x-axis and y-axis
b. axis labels with units
c. random pictures
d. descriptive title

1. a straight line on a graph shows a ______ relationship between two variables.

a. linear
b. nonlinear
c. no relationship
d. curved

1. a curved line on a graph represents a ______ relationship.

a. linear
b. nonlinear
c. positive only
d. negative only

1. a best-fit line on a graph is used to ______.

a. hide wrong data points
b. show the general trend of data
c. write the graph title

Explanation:

Analyze required parts of a graph

A complete scientific graph requires axes, clear labels with units, and a descriptive title to communicate data. Random pictures are unnecessary and distracting.

Identify straight line relationships

A straight line on a coordinate grid indicates that the rate of change is constant, representing a linear relationship between the variables.

Identify curved line relationships

A curved line shows a rate of change that is not constant, which represents a nonlinear relationship.

Determine the purpose of a best-fit line

A line of best fit is drawn through data points to show the general trend or pattern of the data, rather than hiding points or writing titles.

Answer:

Question 7

• A. X-axis and Y-axis
• B. Axis labels with units
• C. Random pictures (Correct answer)
• D. Descriptive title

Question 8

• A. Linear (Correct answer)
• B. Nonlinear
• C. No relationship
• D. Curved

Question 9

• A. Linear
• B. Nonlinear (Correct answer)
• C. Positive only
• D. Negative only

Question 10

• A. Hide wrong data points
• B. Show the general trend of data (Correct answer)
• C. Write the graph title