Find the slope and y intercept of the line in the given equation y=-7/10x-2

Find a least squares solution of Ax=b by constructing and solving the normal equations.
${\displaystyle A=\left[\begin{array}{cc}3& 1\\ 1& 1\\ 1& 4\end{array}\right],b\left[\begin{array}{c}1\\ 1\\ 1\end{array}\right]}$
${\displaystyle \bar{x}=}$?

Find two different sets of parametric equations for the rectangular equation $y=6x-5$

Eliminate the parameter to express the following parametric equations as a single equation in x and y.
${\displaystyle x=2\sin 8t,y=2\cos 8t}$

Solve the equation.
4(2a + 3) - 3(4a - 2) = 5(4a - 7)

Solve the equation.
2(x+3)=3(x-3)

For the equation (-1,2), ${\displaystyle y=\frac{1}{2}x-3}$, write an equation in slope intercept form for the line that passes through the given point and is parallel to the graph of the given equation.

Solve quadratic equation.
${\displaystyle 9-6x+x^2=0}$