Plz help what is the value of b?

Can someone me my sister? she is in third grade. 50 points and brainlist! ones that are not answered. plz and thx!

Match each statement with its corresponding value for the system below: y = -2(3)x and y = 9x - 2 1. the number of points of intersection. -2 2. the x-coordinate of the solution. 1 3. the y-coordinate of the solution. 0

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)