Circle Line Solution 80B334
1. **State the problem:** Solve the system of equations:
$$x^{2}+y^{2}-5x+2y+1=0$$
$$3x-4y+1=0$$
2. **Rewrite the linear equation to express one variable:**
From $$3x-4y+1=0$$, solve for $$y$$:
$$3x-4y+1=0 \implies 4y=3x+1 \implies y=\frac{3x+1}{4}$$
3. **Substitute $$y$$ into the circle equation:**
$$x^{2}+\left(\frac{3x+1}{4}\right)^{2}-5x+2\left(\frac{3x+1}{4}\right)+1=0$$
4. **Simplify the equation:**
$$x^{2}+\frac{(3x+1)^{2}}{16}-5x+\frac{2(3x+1)}{4}+1=0$$
Multiply through by 16 to clear denominators:
$$16x^{2}+(3x+1)^{2}-80x+8(3x+1)+16=0$$
5. **Expand and simplify:**
$$(3x+1)^{2} = 9x^{2} + 6x + 1$$
So:
$$16x^{2} + 9x^{2} + 6x + 1 - 80x + 24x + 8 + 16 = 0$$
Combine like terms:
$$25x^{2} + (6x - 80x + 24x) + (1 + 8 + 16) = 0$$
$$25x^{2} - 50x + 25 = 0$$
6. **Divide entire equation by 25:**
$$x^{2} - 2x + 1 = 0$$
7. **Factor the quadratic:**
$$(x - 1)^{2} = 0$$
8. **Solve for $$x$$:**
$$x = 1$$
9. **Find corresponding $$y$$:**
$$y = \frac{3(1) + 1}{4} = \frac{4}{4} = 1$$
10. **Final solution:**
$$\boxed{(x,y) = (1,1)}$$