Please solve and show work

2 x5-1 6. Let f(x) = jax+b -10 - 10

2 6. Let f (x) = ax+b x 23 -2 where a and b are constants. a.) Find the constants, a and b, such that f (x) is continuous on the entire number line. Be sure to use the definition of continuity and demonstrate proper notation. b.) Find limf(x)