Use the domain and range of each of the following relations to determine which is a function.
a. {(7,5), (-6,0), (2,3)}
b. {(7,5),(-6, 0), (-6, - 2), (2, 3)}
c. {7. - 6,2 - 7
d. {(7,5), (-6, 0), (7,3)}

Select all the correct statements. the amount in dollars an electrician charges in terms of the number of hours worked is represented by the function y = 22x + 42. from the function, identify all the phrases that hold true for the situation. the electrician charges an initial fee of $22 the y-variable represents the number of hours the electrician charges an initial fee of $42 the electrician charges $22 for every hour worked the x-variable represents the electricians charges in dollars the electrician charges $42 for every hour worked

Find the maximum value of p= 4x + 5y subject to the following constraints :

Which best describes the function on the graph? direct variation; k = −2 direct variation; k = -1/2 inverse variation; k = −2 inverse variation; k = -1/2