2x+y=-11; 3x-4y=11
how do i solve this by substitution?

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9

Write an equation of the line that passes through the point (2, 3) and is perpendicular to the line x = -1. a) y = 1 b) y = 3 c) y = 0 eliminate d) y = -3

Write the equations in logarithmic form 7^3=343