यदि बिन्दु \( (3,4) \) समीकरण \( 3 y=a x+7 \) के आलेख पर सिल्यित है तो \( a \) का मान बताइए।

Solve: \( \frac{3 x-7}{x^{2}-5 x+6}-\frac{2 x+8}{x^{2}-9}-\frac{x+2}{x^{2}+x-6}=0 \)

Solve: \( \frac{16^{x-1}}{4}=64 \)

[2. Graphs and Functions What is the slope of the line with the equation \( -3 x+4 y=8 \) ? Hint: Use the formula sheet to determine the formula(s) needed to solve the problem. A -3

27 Donat el vector \( \overrightarrow{\mathrm{u}}(-5, k) \), calcula \( k \) de manera que a) \( \overrightarrow{\mathrm{u}} \) sigui ortogonal a \( \vec{v}(4,-2) \). b) el mòdul de \( \overrightarrow{\mathrm{u}} \) sigui igual a \( \sqrt{34} \).

3. \( x^{2}+9 x+14 \)