Make them both equal to y
y=-2x+6
2y=x+6 y=1/2x+3
These are perpendicular since ones slope is -2 and the other is the opposite, 1/2.
Answer:

Step-by-step explanation:
The number of bushels produced is given by:

The owner's income is given by:

Income is given by the price per unit multiplied by the number of units sold. Therefore, the price function can be represented as:

The library would have 90 non-fiction books.