What is the awnsers to this equation

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

Write an equation in slope intercept form of the line passes through the given point and is parallel to the graph of the given equation (0,0); y=3/8 x+2

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76