Question

P(x) =ax+b, a is not equal to 0

Answer 1

Step-by-step explanation:

The root is

$ax + b = 0 \\ ax = - b \\ x = \frac{ - b}{a}$

Thank you

Answer 2

Step-by-step explanation:

P(x) = ax + b

let x = 0

P(0) = b

let x = 1

P(x) = ax + b

P(1) = a + b

a+b = 1