Answer: Coefficient of x represents the cost price of each brick.
Explanation:
Since we have given that
Equation of her daily income is given by

where, x is the number of bricks laid that day.
Here, Coefficient of x is 0.5.
which represents the cost price of each bricks.
Since x number of bricks is used that day, so the price becomes 0.5x for that day.
Hence, coefficient of x represents the cost price of each brick.