Solve. First try to solve the equation by factoring. If you are unable to solve the equation by factoring, solve the equation by using the quadratic formula. (Enter your answers as a comma-separated list.) \[ 16 t^{2}-81=0 \] \( t=\square \)

Solve for \( j \) \[ 5 \leq 6-j \]

Ive the system of equations by graphing. (If there is no solution, enter NO SOLUTION. If there are infinitely many solutions, enter INFINITELY MANY.) \[ \begin{array}{l}2 y=3 x+1 \\ 3 x-2 y=7\end{array} \] \( y=( \)

Solve for \( r \) \[ \frac{r}{3}+6<3 \]

Solve the system of equations by graphing, (If there is no solution, enter NO sOLUTION, If there are infinitely many solutions, enter INFINITELY MANY.) \[ \begin{array}{l}y=2 x-6 \\ y=-5 x+1\end{array} \] \( (x, y)=(\square \)

OEFENING 7 Deur die positiewe waardes van die vertikale veranderings te beskou, bepaal watter een van die twee lyne is meer steil in elke geval? \( \begin{array}{ll}\text { (1) } y=\frac{1}{5} x ; y=\frac{2}{5} x & \text { (2) } v=-4\end{array} \)