A loaf of bread of similar quality in the store costs $2.50. This is the rate for a loaf of bread (the slope). As there is no other cost, your beginning point (y-intercept) is zero. Write the linear equation y = mx + b for the total cost of x loaves of bread.

Question

A loaf of bread of similar quality in the store costs $2.50.   This is the rate for a loaf of bread (the slope).  As there is no other cost, your beginning point (y-intercept) is zero.   Write the linear equation y = mx + b for the total cost of x loaves of bread.

oobleck · Answer

y = 2.50x