Code a Question in Default Mode

In default mode, the following syntax is used in the answer field.

ReferenceInstructor HelpWebAssign

range:[-1,1]; (-0.75,0.25]

The following table shows the display attributes that you can specify.

Attribute	Syntax	Description	Default Value
`range`	`range:[lower_bound, upper_bound]`	Indicates the desired minimum range. If the tickmarks attribute is specified, the range attribute is ignored.	[-5,5]
`tickmarks`	`tickmarks:[lower_bound, increment,upper_bound]`	Indicates the lower bound (`lower_bound`) and upper bound (`upper_bound`) of the labeled tickmarks, as well as the tickmark interval size (`increment`) desired.	Calculated by the NumberLine tool
`minor_tickmarks`	`minor_tickmarks:[false]`	Indicates whether to display unlabeled tickmarks. Valid values are true or false.	true

If no values are specified for the range attribute, the tool defaults to a range value of [-5,5]. For the range attribute and for the tickmarks attributes, the range or the interval size between tickmarks is determined automatically. The tool will attempt to use the specified range or interval size; however, if the specified range or interval size returns no usable images for the number line graph, the tool determines an appropriate range or interval size. If the tickmarks attribute is specified, a range attribute is unnecessary and is ignored. If the value of minor_tickmarks is not set to false, the tool populates as many minor tickmarks as possible.

Examples The following tables show a few coding examples. Code range:[-1,1]; (-0.75,0.25] Description The range is from -1 to 1. The answer key is (-0.75,0.25]. Displayed to Students Example of a NumberLine question as it is displayed to students Code range:[-8,8]; minor_tickmarks:[false]; -3;0;3;6 Description The requested range is from -8 to 8. minor_tickmarks is set to false, so no minor, that is, unlabeled, tickmarks are displayed. In this example, since no minor tickmarks would be displayed by default given a range of [-8,8], it is not necessary to specify this attribute. The answer key is -3;0;3;6. Displayed to Students Example of a NumberLine question as it is displayed to students Code range:[-8,9];[-2,2] Description The requested range is from -8 to 9. The tool determines that for an optimum student user experience, the range needs to be extended to [-8,12]. The answer key is [-2,2]. Displayed to Students