Function Transformations
1. **Problem Statement:** Given the curve points A(0,2), B(1,0), C(4,4), D(6,0) for $y=f(x)$, find new points after transformations and explain effect on $y$. For the second part, given $y=f(x)$ with horizontal asymptote $y=2$ and vertical asymptote $x=1$, find transformed asymptotes and axis intersections.
2. **Part 1: Points transformations**
- a) $y=f(x+1)$: Translation left 1 unit; coordinates move so new $x$ is old $x-1$.
A: $(0,2)$ becomes $(-1,2)$
B: $(1,0)$ becomes $(0,0)$
C: $(4,4)$ becomes $(3,4)$
D: $(6,0)$ becomes $(5,0)$
- b) $y=f(x)-4$: $y$ values decrease by 4.
A: $(0,2)$ to $(0,2-4)=(0,-2)$
B: $(1,0)$ to $(1,-4)$
C: $(4,4)$ to $(4,0)$
D: $(6,0)$ to $(6,-4)$
- c) $y=f(x+4)$: Translation left 4 units.
A: $(0,2)$ to $(-4,2)$
B: $(1,0)$ to $(-3,0)$
C: $(4,4)$ to $(0,4)$
D: $(6,0)$ to $(2,0)$
- d) $y=f(2x)$: Horizontal compression by factor 2 (x-values scale by $1/2$).
A: $(0,2)$ to $(0,2)$
B: $(1,0)$ to $(0.5,0)$
C: $(4,4)$ to $(2,4)$
D: $(6,0)$ to $(3,0)$
- e) $y=3f(x)$: Vertical stretch by factor 3.
A: $(0,2)$ to $(0,6)$
B: $(1,0)$ to $(1,0)$
C: $(4,4)$ to $(4,12)$
D: $(6,0)$ to $(6,0)$
- f) $y=f(1/2 x)$: Horizontal stretch by factor 2.
A: $(0,2)$ to $(0,2)$
B: $(1,0)$ to $(2,0)$
C: $(4,4)$ to $(8,4)$
D: $(6,0)$ to $(12,0)$
- g) $y=rac{1}{2}f(x)$: Vertical compression by factor 1/2.
A: $(0,2)$ to $(0,1)$
B: $(1,0)$ to $(1,0)$
C: $(4,4)$ to $(4,2)$
D: $(6,0)$ to $(6,0)$
- h) $y=f(-x)$: Reflection about y-axis.
A: $(0,2)$ to $(0,2)$
B: $(1,0)$ to $(-1,0)$
C: $(4,4)$ to $(-4,4)$
D: $(6,0)$ to $(-6,0)$
3. **Part 2: Asymptotes and intersections transformations** (Original $y=f(x)$: passes origin $(0,0)$, horizontal asymptote $y=2$, vertical asymptote $x=1$)
- a) $y=f(x)+2$:
Horizontal asymptote increases by 2: $y=2+2=4$
Intersection shifts up by 2: $(0,0)$ to $(0,2)$
- b) $y=f(x+1)$:
Horizontal asymptote unchanged: $y=2$
Vertical asymptote shifts left 1 unit: $x=1$ to $x=0$
Intersection shifts left: $(0,0)$ to $(-1,0)$
- c) $y=2f(x)$:
Horizontal asymptote doubles: $y=2 imes 2=4$
Intersection doubles y: $(0,0)$ to $(0,0)$ (origin)
- d) $y=f(x)-2$:
Horizontal asymptote shifts down by 2: $y=2-2=0$
Intersection shifts down: $(0,0)$ to $(0,-2)$
- e) $y=f(2x)$:
Horizontal asymptote unchanged: $y=2$
Vertical asymptote scales horizontally: $x=1$ to $x=0.5$
Intersection compress horizontally: $(0,0)$ remains $(0,0)$
- f) $y=f(\frac{1}{2} x)$:
Horizontal asymptote unchanged: $y=2$
Vertical asymptote is stretched: $x=1$ to $x=2$
Intersection stretches horizontally: $(0,0)$ to $(0,0)$
- g) $y=\frac{1}{2} f(x)$:
Horizontal asymptote halves: $y=2 \times \frac{1}{2}=1$
Intersection halves y: $(0,0)$ to $(0,0)$
- h) $y=-f(x)$:
Horizontal asymptote negated: $y=-2$
Intersection negated y: $(0,0)$ to $(0,0)$
**Summary:** Transformations that add or subtract constants shift asymptotes and intersections vertically.
Scaling y-values stretch/compress horizontal asymptote and intersections accordingly.
Scaling x-values shift vertical asymptotes and stretch/compress intersections horizontally.
Reflections negate y-values.
Final transformed equations and coordinates as derived.