Someone do this proof for me (attached question 5) 10 points

Amerchant has coffee worth $60 a pound that she wishes to mix with 50 pounds of coffee worth $90 a pound to get a mixture that she will sell for $70 a pound. how many pounds of the & 60 coffee should be used?

The table represents a linear function. what is the slope of the function? –6 –4 4 6

Write an equation for the function that includes the points (1,4/5) and (2,2/3)