The system of equations y = 2(x + 3) and y - 2x = 6 has infinitely many solutions. Explain why the point (-1,-5) is not a solution of the system.

Can someone answer it, and plot it, for 20 points and brainliest answer? p. s. they're the same ! : )

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236

The base of a rectangular pyramid is 13 inches long and 12 inches wide. the height of the pyramid is 8 inches. what is the volume of the pyramid