Chapter 2: Linear Equations

Use cross products to determine whether each pair of ratios forms a proportion.

$\frac{0.2}{1.8},\frac{1}{0.9}$

Solve each equation. Check your solution.

$3m+4=-11$

Solve the equation $13x+2=4x+38$. Also check your solution

State whether each percent of change is a percent of increase or a percent of decrease. Then find the percent of change. Round to the nearest whole percent.

$\begin{array}{l}\mathrm{Original}:78\\ \mathrm{New}:125\end{array}$

Determine whether each pair of ratios are equivalent ratios. Write yes or no.

$\frac{3}{7},\frac{9}{14}$

Evaluate the expression $\left|3-h\right|+13$ for$h=5$

Evaluate the expression $23-\left|3-4x\right|$ for $x=2$.

Translate each sentence into an equation.

Three times $r$less than 15 equals 6.

Evaluate the following equation and check the solution is correct or not:

$g+5=33$

Translate each sentence into an equation.

1. The sum of three times a and four is the same as five times a.