Find the slope of every line that is parallel to the graph of the equation x-2y=-7

Me because some of question i don’t understand

The table represents a function f(x). what is f(3)? a.-9 b.-1 c.1 d.9

The table below lists recommended amounts of food to order for 10 party guests. how much of each food item should nathan and amanda order for a graduation party with 55 guests? use the table to answer. item amount fried chicken 16 pieces lasagna 7 pounds deli meats 1.8 pounds sliced cheese 1 and two fifths pounds bakery buns 1 dozen potato salad 2 pounds