Q. (x−7)2+(y+5)2=16The given equation represents a circle in the xy-plane. If (x,−5) is a point on the circle, what is a possible value of x ?◻
Given Circle Equation: We are given the equation of a circle: x\(-7)^2 + (y+5)^2 = 16\. We are also given a point on the circle where the y-coordinate is (-5\)\. We need to find the corresponding x-coordinate.
Substitute y=−5: Substitute y=−5 into the equation of the circle to find the possible values of x.(x−7)2+(−5+5)2=16(x−7)2+0=16(x−7)2=16
Take Square Root: Take the square root of both sides of the equation to solve for x.(x−7)2=±16x−7=±4
Solve for x: Solve for x by adding 7 to both sides of the equation.x=7±4
Two Possible Solutions: There are two possible solutions for x.x=7+4 or x=7−4x=11 or x=3
More problems from Write a quadratic function from its x-intercepts and another point