What is an equation of the circle whose center is (1,3) and whose radius is 2? A: (x + 1) + (y + 3) = 4 B: (x − 1) + (y − 3) = 2 C: x + y = 4 D: (x − 1) + (y − 3) = 4 相关知识点: ...
The equation of a circle and its graph are closely related. The equation can be used to plot points on the circle's circumference and to determine its center and radius. The graph, in turn, helps visualize the circle and its properties. What is the difference between...
The standard form equation for the unit circle is: {eq}x^2+y^2=1 {/eq} Intersection with a line: To find the intersection of a line with the unit circle we substitute the equation of the line on the equation of the unit circle and solve the q...
This lesson focuses on defining a circle, presenting its equation in two different forms (standard and general), and giving examples of how to solve problems. Related to this Question 1. What is the equation of the circle with center (-4,-3) that passes through the ...
For a unit circle, this distance is 1 unit, or the radius is 1 unit. Let us learn the equation of the unit circle, and understand the ways to represent each of the points on the circumference of the unit circle, with the help of T-ratios....
To draw perpendicular lines with a compass: Step 1: First, use a ruler to draw a straight horizontal line. Step 2: Then, draw a dot somewhere on the horizontal line. Step 3: Put your compass point on the dot and draw a small circle around the dot. The size of the circle doesn...
( ) A. (x-√3)^2+(y+2)^2=11 B. (x-√3)^2+(y+2)^2=11 C. (x-√3)^2+(y+2)^2=11 D. (x-√3)^2+(y+2)^2=11 E. (x-√3)^2+(y+2)^2=11 相关知识点: 试题来源: 解析 C 反馈 收藏
Let us suppose r is the radius of a circle, and (h,k) are the coordinates of the center of a circle then the equation of the circle is written as: (x−h)2+(y−k)2=r2 The center-radius form of a circle is also known as its standard equation. ...
The Earth’s orbit is slightly elliptical—it’s a not-quite-perfect circle. When the Earth iscloser to the Sun, it travels more quickly along its orbit. The Earth’s spin axis is tilted—around the solstices, one of the Earth’s poles isleaning toward the Sun. Around theequinoxes, ...
What is the y coordinate of a graph?Terminology of Graphs in Algebra:In the study of algebra, a graph is a visual depiction of an equation. Graphs have many different parts, and we have different terms that we use to describe those parts. Being familiar with this terminology of graphs ...