Respuesta :

y - 4 x = 7 - x²
y = - x ² + 4 x + 7 ( this is a quadratic function )
x = - b / 2 a,  where: a = - 1 and  b = 4
x = - 4 / ( - 2 ) = 2
Answer:
The axis of symmetry for the graph is   x  =  2