Algebra 2 Equations and Inequalities: Get Answers Here

To solve the equation system, use the Gauss-Jordan method. If the system has infinitely many​ solutions, give the solution with z arbitrary.
$x-5y+2z=1$
$3x-4y+2z=-1$

Use an inverse matrix to solve system of linear equations.
$x+2y=-1$
$x-2y=3$

Consider the following system of llinear equations.
${\displaystyle \frac{1}{3}x+y=\frac{5}{4}}$
${\displaystyle \frac{2}{3}x-\frac{4}{3}y=\frac{5}{3}}$
Part A: ${\displaystyle \frac{Whatproptoerty}{proptoerties}}$ can be used to write an equivalent system?
Part B: Write an equivalent system and use elimination method to solve for x and y.

Find the solution (x,y)to the system of equations.
$\{\begin{array}{l}3x+y=28\\ -x+3y=4\end{array}$
Multiply the coordinates $x\cdot y$

(a) Find a system of two linear equations in the variables x and y whose solution set is given by the parametric equations $x=t$ and y $=3-2t.$
(b) Find another parametric solution to the system in part (a) in which the parameter is s and $y=s.$

Solve the equivalent equations
${\displaystyle \frac{3x+2}{5}=7}$
and
$x+9=20$

Is the answer to this system of equations (3, 8)?
$y=7x+8$
$y=x+1$
-True
-False

Solve the following system of linear equations in two variables by Substitution method.
$5x-2y=-7$
$x=-2y+1$