Inequalities that use < or > symbols are plotted with a dashed line to show that the line is not included in the region. Inequalities that use ≤ or ≥ symbols are plotted with a solid line to show that ...

Sisi Mitchell pores over tables of data showing the number of homicides, assaults, arrests and community engagements with police in Minneapolis. Her task is to find which precincts have the most ...

Young people these days live most of their lives online, so why shouldn’t they be plotting graphs and performing advanced calculations there as well? For the first time this spring, students taking ...

Show values that satisfy an inequality on a set of axes by drawing the line of the corresponding equation and shading the area specified in a question. Include a dashed line for inequalities where the ...