(x+3)2+(y−4)2=9A circle in the xy-plane has the equation shown. If the x-coordinate of a point on the circle is −3 , what is a possible corresponding y coordinate?
Q. (x+3)2+(y−4)2=9A circle in the xy-plane has the equation shown. If the x-coordinate of a point on the circle is −3 , what is a possible corresponding y coordinate?
Substitute and Solve: We are given the equation of a circle(x+3)2+(y−4)2=9 and we need to find the y-coordinate when x=−3. First, let's substitute x=−3 into the equation and solve for y. (−3+3)2+(y−4)2=9
Simplify Left Side: Now, we simplify the left side of the equation.(0)2+(y−4)2=90+(y−4)2=9(y−4)2=9
Take Square Root: Next, we take the square root of both sides of the equation to solve for y−4.(y−4)2=±9y−4=±3
Find Solutions: We have two possible solutions for y. Let's find both.First solution: y−4=3y=3+4y=7
First Solution: Second solution: y−4=−3y=−3+4y=1
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