4) For each linear equation, identify the slope (m) and the \( y \)-intercept (b) \( \begin{array}{l}\text { a. } y=4 x-5 \\ \text { b. } y=11+\frac{2}{3} x \\ \text { c. } y=\frac{2}{3}-x \\ \text { d. } 6-\frac{9}{2} x=y \\ \text { e. } \quad y=\frac{5}{2} x-\frac{19}{8} \\ \text { f. }-\frac{5}{4}-\frac{2}{7} x=y\end{array} \)

[-/2 Points] DETAILS MY NOTES TGEIALG6 2.5.053. The perimeter of a regulation singles tennis court is 210 feet and the length is 3 feet less than three times the width. What are the dimensions (in ft ) of the court width length

Factorise coumpletely. \( 21 a^{2}+28 a^{b} \)

Verifique se a equação abaixo é ou não é uma proporção \( \frac{2-2 x}{3 x}=-\frac{1}{3} \)

1) \( y=6 x \)

Find the \( x \) - and \( y \)-intercepts of the graph of the equation. Do not graph the line. \[ \begin{array}{l}7 x+5 y=35 \\ x \text {-intercept } \quad(x, y)=(\square) \\ y \text {-intercept } \quad(x, y)=(\square)\end{array} \]