SIMPLE ALGEBRA WORKINGS SEE ATTACHED FILE

GRADED ASSIGNMENT!! Only the student’s instructor may help.

Graphing Activity 2A Name ____________________

(10 points) Instructor ____________________

(Warr, Interactive Mathematics III, p.63, example 2.8) Due ____________________

The Blue Book gives you an estimated trade-in value of a car according to the formula

T = -1800n + 16200

where T (trade-in value in dollars) is in terms of n (age of car in years).

Assume the trade-in value can change throughout the year.

(1) 1. Should the points of the graph of this equation be connected? Yes or No

(circle one)

(2) 2. Find the vertical intercept. (0, __________) Interpret this point in the context of

the problem.

(2) 3. Find the horizontal intercept. (____, 0) Interpret this point in the context of the

problem.

(1) 4. Choose two values of n between n = 0 and the n-value from #3 and determine

their corresponding T-values.

(0, ________), (_____,________), (_____,________), (_____, 0)

(1) 5. Based on these ordered pairs, adjust the viewing rectangle to graph the equation,

T = -1800 n +16200. Describe the viewing rectangle you used, making sure the

vertical and the horizontal intercepts are clearly visible.

nmin = _____ nmax = _____ T min = _____ T max = _____

(3) 6. Draw a complete graph using the viewing rectangle from #5.

(See graphing activity 1 or graphing instruction sheet on how to draw a complete graph.)

STOP