Term
Constant of proportionality 

Definition
the constant value of the ratio of two proportional quantities 


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Definition
of a straight line shows how steep a straight line is 


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Definition
A relationship between two variables such that the values of both variables increase or decrease together at a constant rate. 


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Definition
The value of x when a given curve crosses the xaxis. 


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Definition
An equation in which the highest power of any variable is one. 


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Definition
The value of y when a given curve crosses the yaxis. 


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Definition
the equation of a straight line in the form 


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Definition
A rate is a ratio that is used to compare different kinds of quantities. 


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Definition
Any straight line on the coordinate plane can be described by the equation 


Term
Proportional relationship 

Definition
Proportions are the comparison of two equal ratios. Therefore, proportional relationships are relationships between two equal ratios. 


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Definition
A rate of change is a rate that describes how one quantity changes in relation to another quantity. 


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Definition
An intersection is a single point where two lines meet or cross each other. 

