What is the slope of the line represented by the equation y=-x+3

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?

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function

Find the value of x for which the lines are parallel.