28. If graph ofxy=1 is reflected in y = 2x to give the graph 12x^2+rxy+sy^2+=0, then(a) r=7(c) r 25(b) s=-12(d) r + s =-192

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Q. The reflection of the curve xy = 1 in the line y = 2x is the curve

12 x^{2} + r x y + s y^{2} + t = 0

then the value of 'r' is

To plot the graphs of the following equations:
Equation 1: $3 x + 2 y = 1$
Equation 2: $y - 2 x = 2$
Fill in the values (p, q, r, s) in the given tables.
Equation 1:
$\begin{matrix} x & 0 & 5 y & p & q \end{matrix}$
Equation 2:
$\begin{matrix} x & r & s y & 0 & 5 \end{matrix}$

Q. If in the expansion of

{(x^{4} - \frac{1}{x^{3}})}^{15}

x^{- 17}

occurs in rth term, then
(a) r = 10
(b) r = 11
(c) r = 12
(d) r = 13

Q. You have been asked to plot graphs of the following equations:
Equation 1:

3 x + 2 y = 1

Equation 2:

y - 2 x = 2

Fill the following tables (find p, q, r, s) which you will use to plot the graphs:
Equation 1:

\begin{matrix} x & 0 & 5 y & p & q \end{matrix}

Equation 2:

\begin{matrix} x & r & s y & 0 & 5 \end{matrix}

You have been asked to plot graphs of the following equations:
Equation 1: $3 x + 2 y = 1$
Equation 2: $y - 2 x = 2$
Fill the following tables (find p, q, r, s) which you will use to plot the graphs:
Equation 1:
$\begin{matrix} x & 0 & 5 y & p & q \end{matrix}$
Equation 2:
$\begin{matrix} x & r & s y & 0 & 5 \end{matrix}$

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