In the standard (x,y) coordinate plane, an equation of a circle is x² + y² = 64. At what points does the circle intersect the y-axis?
A.) (0,1) and (0,-1) B.) (0,8) and (0,-8) C.) (0,9) and (0,-9) D.) (0,10) and (0,-10) E.) the circle does not intersect the y-axis
When a graph intersects the y-axis, the value of x is equal to zero.
To find the y-intercepts, set x equal to zero. x² + y² = 64 0² + y² = 64 {substituted 0 for x} y² = 64 {simplified} y = 8 or -8 {took square root of each side} The coordinates of the y-intercepts would be B.) (0,8) and (0,-8) Comments are closed.
|
Latest Videos
Archives
May 2022
ACT is a registered trademark of ACT, Inc. SAT is a registered trademark of the College Board. ACT and SAT are not affiliated with this site.
|