Quadratic Function 38D662
1. **Problem statement:**
Find the turning point and its nature, and the intersection points with the axes for the quadratic function $$y = x^2 - 4x + 3$$.
2. **Turning point:**
The turning point of a parabola given by $$y = ax^2 + bx + c$$ is at $$x = -\frac{b}{2a}$$.
3. **Calculate turning point x-coordinate:**
Here, $$a = 1$$ and $$b = -4$$, so
$$x = -\frac{-4}{2 \times 1} = \frac{4}{2} = 2$$.
4. **Calculate turning point y-coordinate:**
Substitute $$x = 2$$ into the function:
$$y = (2)^2 - 4(2) + 3 = 4 - 8 + 3 = -1$$.
5. **Turning point coordinates:**
The turning point is at $$(2, -1)$$.
6. **Nature of turning point:**
Since $$a = 1 > 0$$, the parabola opens upwards, so the turning point is a minimum.
7. **Intersection with y-axis:**
Set $$x = 0$$:
$$y = 0^2 - 4(0) + 3 = 3$$.
So the y-intercept is $$(0, 3)$$.
8. **Intersection with x-axis:**
Set $$y = 0$$ and solve for $$x$$:
$$x^2 - 4x + 3 = 0$$.
9. **Factorize quadratic:**
$$x^2 - 4x + 3 = (x - 1)(x - 3) = 0$$.
10. **Solve for x:**
$$x - 1 = 0 \Rightarrow x = 1$$
$$x - 3 = 0 \Rightarrow x = 3$$
11. **x-intercepts:**
$$(1, 0)$$ and $$(3, 0)$$.
**Final answers:**
- Turning point: $$(2, -1)$$ (minimum)
- y-intercept: $$(0, 3)$$
- x-intercepts: $$(1, 0)$$ and $$(3, 0)$$