The unit rate for the situation is 3 tomatoes per teaspoon of salt.
The equation of a straight line is given by:
y = mx + b;
where m is the slope of the line, b is the y intercept and y, x are variables.
y represent the number of tomatoes added and x represent the number of teaspoon of salt.
Given the equation of the line is: y = 3x
The unit rate of the graph is equal to the slope of the graph (i.e. 3). Hence:
The unit rate for the situation is 3 tomatoes per teaspoon of salt.
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