Chapter 3: Systems of Equations and Inequalities

Evaluate each expression if$x=-2,y=6,$and$z=5.$$-2x-3y+2z$

Write each equation in standard form. Identify A, B, and C.

$3x=2-5y$

$\frac{7u-1}{4}-1=\frac{4u+8}{5}$

Write each equation in standard form. Identify A, B, and C.

$63. 6x=3y-9$

Identify each function as S for step, C for constant, A for absolute value or P for piecewise.

$\frac{3y-6}{2}+5=\frac{11y-4}{5}$

Write each equation in standard form. Identify A, B, and C.

$y=\frac{1}{2}x-3$

Solve each equation. Check your solution.

$\left|x\right|-5=8$

$0.4x+0.6=0.5x-1.2$

Solve each equation. Check your solution.

$65.\left|w+3\right|=12$