Curve Line Intersection 3Cb1F1
1. **State the problem:** Find the coordinates of points A and B where the curve $y = \sqrt{3x - 2}$ intersects the line $y = \frac{1}{2}x + 1$.
2. **Set the equations equal to find intersection points:**
$$\sqrt{3x - 2} = \frac{1}{2}x + 1$$
3. **Square both sides to eliminate the square root:**
$$3x - 2 = \left(\frac{1}{2}x + 1\right)^2$$
4. **Expand the right side:**
$$3x - 2 = \frac{1}{4}x^2 + x + 1$$
5. **Bring all terms to one side to form a quadratic equation:**
$$0 = \frac{1}{4}x^2 + x + 1 - 3x + 2$$
$$0 = \frac{1}{4}x^2 - 2x + 3$$
6. **Multiply through by 4 to clear the fraction:**
$$0 = x^2 - 8x + 12$$
7. **Solve the quadratic equation:**
Use the quadratic formula $x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$ with $a=1$, $b=-8$, $c=12$.
Calculate the discriminant:
$$\Delta = (-8)^2 - 4 \times 1 \times 12 = 64 - 48 = 16$$
Calculate roots:
$$x = \frac{8 \pm \sqrt{16}}{2} = \frac{8 \pm 4}{2}$$
So,
$$x_1 = \frac{8 + 4}{2} = 6$$
$$x_2 = \frac{8 - 4}{2} = 2$$
8. **Find corresponding y-values by substituting back into the line equation:**
For $x=6$:
$$y = \frac{1}{2} \times 6 + 1 = 3 + 1 = 4$$
For $x=2$:
$$y = \frac{1}{2} \times 2 + 1 = 1 + 1 = 2$$
9. **Check the points satisfy the original curve equation:**
For $(6,4)$:
$$y = \sqrt{3 \times 6 - 2} = \sqrt{18 - 2} = \sqrt{16} = 4$$
For $(2,2)$:
$$y = \sqrt{3 \times 2 - 2} = \sqrt{6 - 2} = \sqrt{4} = 2$$
Both points satisfy the curve.
**Final answer:**
Points of intersection are $A = (2, 2)$ and $B = (6, 4)$.