Find the value of x

Look at the picture^^

Answer with work please I need help???

What is the difference between the points (4, 7) and (4, -5)? a. 0 units b. 2 units c. 4 units d. 12 units

Find the value of p for which the polynomial 3x^3 -x^2 + px +1 is exactly divisible by x-1, hence factorise the polynomial

How many solutions does the nonlinear system of equations graphed below have? a. one b. zero c. four d. two