17. determine ule uumun
domolno ns 2.5.
a contestant on a game show is given $100 and is as
questions. the contestant loses $20 for every wrong answer.
18. sketch a graph of the situation.
19. is the graph discrete or continuous?
discrete
20. determine the domain and range.
module 3
112

The value of x in this system of equations is 1. 3x + y = 9 y = –4x + 10 substitute the value of y in the first equation: combine like terms: apply the subtraction property of equality: apply the division property of equality: 3x + (–4x + 10) = 9 –x + 10 = 9 –x = –1 x = 1 what is the value of y?