<prompt> An index of the binding affinity of a hormone for its receptor can be obtained by examining theY-intercept of a Scatchard plotSlope of a Scatchard plotMaximum point on a biological dose-response curveX-intercept of a Scatchard plot  <response>: Scatchard plots of hormone-receptor binding data give information regarding the number of receptors and the affinity of the hormone for its receptor. The x-intercept provides data regarding total receptor number, and the slope is equal to the negative of the association constant -Ka. 