PJ has 3 colors to choose from. This means she has a 1/3 chance of getting purple on the spinner, if the sections are equal. So, in order to find out the total amount of cupcakes that are purple, we multiply 60 by 1/3. The answer turns out to be 20.
A line parallel to the y-axis that passes through (77,88) is x = 77. There is no slope-intercept form of this equation if our coordinate system is based upon a horizontal x-axis and a vertical y-axis.