Ireally need (math) "and its a pic"

The function f(x) is shown in this graph the function g(x)=6x

Lines a and b are perpendicular. if the slope of line a is 3, what is the slope of line b?

Gray looks up the definition of point. a point is a location in a region. what is true about the statement describing the word point? 1. the statement uses the terms location and region that are defined based on an understanding of a point. 2.the statement precisely defines the concept of a point. 3. the statement does not include information needed to fully define a point. 4. the statement is an incorrect description of a point because it does not use mathematical words.