The summary of ‘Equation of a Translated Circle’

The YouTube video discusses translating images into circle equations using the distance formula, emphasizing the foundational importance of understanding the formula. The speaker demonstrates how to calculate distances for x and y coordinates on a circle and the impact of selecting different radii on diagrams. Simplifying equations and finding the center of the circle are also highlighted, showcasing examples with varying radius values to illustrate key concepts. The video delves into determining the center of a graph and the significance of knowing the equation for identifying crucial graph details.

00:00:00

In this part of the video, the speaker discusses translating a picture into equations for circles using the distance formula. They remind viewers about the formula: distance = sqrt((x1-x2)^2 + (y1-y2)^2) which originates from Pythagoras’ theorem. The speaker emphasizes the importance of learning the formula before it’s provided as reference in more advanced years. The video demonstrates how to apply the distance formula for points on a circle, where they calculate the distances for x and y coordinates using specific values.

00:03:00

In this part of the video, the speaker discusses how selecting a radius of three affects the diagram. They explain that the radius being three means it is the same everywhere, leading to adjustments in the diagram. The speaker then simplifies the equation without square roots and demonstrates how to determine the radius and center of the circle using the given equation. They provide an example with a radius of 11 squared to illustrate the concept.

00:06:00

In this segment of the video, the speaker discusses finding the center of a graph. They mention that the x-coordinate will be 7 and emphasize that the y-coordinate is essentially y – 0 squared, though it is not explicitly written as such. The speaker explains that knowing the equation allows you to determine important details about the graph.