10C Simultaneous equations and break-even point

Solving linear simultaneous equations• Each pair of points x and y which satisfy an equation of a straight line will be coordinates of a point on that line.• The point where two lines intersect satisfies both equations.• You can solve simultaneous equations graphically or algebraically using the substitution method or the elimination method.

• Example, Ex 10C, 1a, 1c

Break-even analysis• In a business, Profit = revenue – costs• Revenue is the money a company earns through sales.• Costs include labour, raw materials, equipment that go into making the product.• If costs exceed revenue, the business makes a loss.• If costs equal revenue, there will be neither profit or loss. This is the break-even point.

• Example, Ex 10C, Q.4• You do Ex 10C, 5, 6, 8