Parabolas Lesson 4 Episode 3 Repeating Your Reasoning No captions CaptionsStop the video above first if it is playing. No captions CaptionsStop the video above first if it is playing. Sasha and Keoni use their equation (which they call the “short-cut way”) to find the y-value of 3 points: when the x-value is 5, 10 and 437. Previous Episode Next Episode Home Units Parabolas Lesson 4