You pick from cards at random 2 4 5 6 7 8 9 Which is P(prime)

What is the slope of the line that contains the points (4,8) and (9,8)? what type of line is it?

The given dot plot represents the average daily temperatures, in degrees fahrenheit, recorded in a town during the first 15 days of september. if the dot plot is converted to a box plot, the first quartile would be drawn at __ , and the third quartile would be drawn at __ link to graph: .

[10 points, algebra 2-simplifying complex fractions]according to my answer key the restrictions are -1 and 4. but why not positive 1?