Question #b1d06
1 Answer
Apr 22, 2017
Substitute the right side of the second equation for y into the first equation.
Solve for the x coordinates
Use the second equation to find the corresponding y coordinates.
Explanation:
Given:
Substitute
Expand the square:
Combine like terms:
Divide both sides by 2:
Factor:
Use equation [2] to find the y coordinates:
The points that solve the two equation are
Here is a graph of the two equations:
graph{(x^2+y^2-25)(y-x+7)=0 [-10, 10, -5, 5]}