Supply Curve is always upwards slope
Supply shows producers willingness and ability to sell goods/services in the market at different prices
producers are more willing to sell more goods at a higher price. So, supply curve is upward sloping
Higher price = incentive to sell more
Determinants of Supply (things that shift the supply curve)
price of inputs
expectations
taxes
subsidies
If production costs go up then the supply curves shifts back to the left
If production costs go down then the supply curves shifts out to the right