6. A linear function f(x) contains the coordinates (-9, 4) and (6,4). Joy says f(x) is a horizontal
line, and Lu says f(x) is a vertical line. Which student correctly described the function?
Explain.
Joy because (-9.4) and (6,4) would have a slope of zero which is a horizontal line,
O Joy because (-9,4) and (6,4) would have a slope of zero who is a vertical line.
O Lu because (-9,4) and (6.4) would have a slope of zero which is a horizontal line
O Lu because (-9,4) and (6.4) would have a slope of zero which is a vertical line.

Acable company wants to provide cell phone service for residents on an island. the function for the cost of laying the cable from the island to the mainland is c(x)= 6.500 square root x2+4, where x represents the length of the cable in feet. what are the domain and range of the function? a) domain: all real numbers range: all real numbers greater than or equal to 17,000 b) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 17,000 c) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 13,000 d) domain: all real numbers greater than or equal to 13,000 range: all real numbers greater than or equal to 0

Using two or more complete sentences, describe how you can find a vector parallel to b=-2,3

How many $20 bills do you need to have to make $280