What value of b will cause the system to have an infinite number of solutions? y = 6x – b –3x + 1/2y = –3

Icould really use some with this question.

Atextile fiber manufacturer is investigating a new drapery yarn, which the company claims has a mean thread elongation of 12 kilograms with a standard deviation of 0.5 kilograms. the company wishes to test the hypothesis upper h subscript 0 baseline colon mu equals 12 against upper h subscript 1 baseline colon mu less-than 12 using a random sample of n equals 4 specimens. calculate the p-value if the observed statistic is x overbar equals 11.8. round your final answer to five decimal places (e.g. 98.76543).

The area of the map is the product of the length and width. write and expression for the area as the product of the two binomials do not multiply