HELP!! due in a few minutes, giving brainlest and points

Afactory buys 10% of its components from suppliers b and the rest from supplier c. it is known that 6% of the components it buys are faulty. of the components brought from suppliers a,9% are faulty and of the components bought from suppliers b, 3% are faulty. find the percentage of components bought from supplier c that are faulty.

If the line in the graph is shifted up two units which is the equation of the new line

Plz me so yeah i rly don't get this