Application of Linear Function

If is directly proportional to and the relationship between and is shown in the table below, find the value of .

When a directly proportional graph passes through the point , find the constant of proportionality .

On the number line, from two points and , represent the coordinate of point , which is equidistant from them.

When a graph of a function passes through and , find the value of .

When a graph of a function passes through a point , find the value of a constant .

For a triangle of area shown in the figure below, the length of base is , and the height is . When , find the value of .

A supermarket sells apple for dollars per . When the price of of apple is dollars, find the price of of apple.

A bathtub can hold of water. After filling water in the empty bathtub, of water was filled in minutes. When we assume the amount of water filled after minutes to be , how long does it take to fill the bathtub to the full?