Suppose a and b represent linear expressions. if a + b = 2x -2 and a - b = 4x- 8, find a and b.

b.an increase in a causes b to decrease

step-by-step explanation:

f(x)=2x^2 -1 

translation is a function transformation that transform the function in a way of translating. by translating the function its graph is moved  up an down. moving the function f(x) 2 units to the left will be the new function g(x) with the equation: g(x)=f(x+2)=2(x+2)^2 -1