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Let g(x) = x+c. The graph of f(x) = (a)/(x+p) + q has a vertical asymptote x=-p and a horizontal asymptote y=q. If the graph of g and the vertical asymptote of f intersect at the x-axis, and the graph

Mathematics

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6.1
The equation of graph gg is g(x)=x+cg(x) = x+c.
To find the x-intercept of gg, we set g(x)=0g(x) = 0:

x+c=0  ⟹  x=−cx+c = 0 \implies x = -c

So the x-intercept of gg is (−c;0)(-c; 0).

The equation of graph ff is f(x)=ax+p+qf(x) = \frac{a}{x+p} + q.
The vertical asymptote of ff occurs when the denominator is zero:

x+p=0  ⟹  x=−px+p = 0 \implies x = -p

The problem states that graph gg and the vertical asymptote of ff intersect at the x-axis. This means their x-intercepts are the same.
Therefore, −c=−p-c = -p, which implies c=pc=p.
Substituting c=pc=p into the x-intercept of gg:
The coordinates of the x-intercept of gg are (−p;0)(-p; 0).

(−p;0)\boxed{(-p; 0)}

6.2
We need to determine the equation of f(x)=ax+p+qf(x) = \frac{a}{x+p} + q. We already know c=pc=p.

Step 1: Use the information that gg intersects the horizontal asymptote of ff at x=1x=1.
The horizontal asymptote of f(x)f(x) is y=qy=q.
Since g(x)g(x) intersects y=qy=q at x=1x=1, we have g(1)=qg(1) = q.
Substitute x=1x=1 into g(x)=x+cg(x) = x+c:

g(1)=1+cg(1) = 1+c

So, q=1+cq = 1+c. Since c=pc=p, we have q=1+pq = 1+p.

Step 2: Use the information that ff and gg intersect on the y-axis.
This means f(0)=g(0)f(0) = g(0).
Substitute x=0x=0 into g(x)=x+cg(x) = x+c:

g(0)=0+c=cg(0) = 0+c = c

Substitute x=0x=0 into f(x)=ax+p+qf(x) = \frac{a}{x+p} + q:

f(0)=a0+p+q=ap+qf(0) = \frac{a}{0+p} + q = \frac{a}{p} + q

Equating f(0)f(0) and g(0)g(0):

c=ap+qc = \frac{a}{p} + q

Substitute q=1+cq=1+c:

c=ap+(1+c)c = \frac{a}{p} + (1+c) 0=ap+10 = \frac{a}{p} + 1 ap=−1  ⟹  a=−p\frac{a}{p} = -1 \implies a = -p

Step 3: Use the information that ff and gg intersect at x=3x=3.
This means f(3)=g(3)f(3) = g(3).
Substitute x=3x=3 into g(x)=x+cg(x) = x+c:

g(3)=3+cg(3) = 3+c

Substitute x=3x=3 into f(x)=ax+p+qf(x) = \frac{a}{x+p} + q:

f(3)=a3+p+qf(3) = \frac{a}{3+p} + q

Equating f(3)f(3) and g(3)g(3):

3+c=a3+p+q3+c = \frac{a}{3+p} + q

Substitute a=−pa=-p and q=1+cq=1+c:

3+c=−p3+p+(1+c)3+c = \frac{-p}{3+p} + (1+c)

Subtract (1+c)(1+c) from both sides:

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