Find the intercepts, and then use them to graph the equation. \( y-5 x=0 \)

1. Which two equations below have a solution of \( x=-5 \) ? A \( \frac{x}{-4}=-20 \) B \( -6+x=-11 \) C \( x-2=3 \) D \( -4 x=20 \)

Last week, Dakota decided she wanted to make her own holiday cards. She purchased supplies and made her first batch. She plans to make even more today. The function \( C(t)= \) \( 7 t+11 \) represents the total number of cards she'll have after \( t \) hours of working on cards today. Complete the paragraph. Dakota started with \( \square \) cards. She will make \( \square \) cards per hour. After 2 hours of working today, she will have \( \square \) cards in all.

Solve the following inequality. \( x^{2}-15 x+54>0 \) The solution is (Type your answer in interval notation. Use integers or fractions for any numbers in the expression. Type an exact answer, using radicals as needed.)

Use Gaussian elimination to find the complete solution to the following system of equations, or show that none exists. \( \left\{\begin{aligned}-x+y+z=-1 \\ -x+5 y-15 z=-13 \\ 3 x-2 y-7 z=\end{aligned}\right. \) Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. A. There is one solution. The solution set is \( \{(\square, \square)\} \) (Simplify your answers.) B. There are infinitely many solutions. The solution set is \( \{(\square, \square, z)\} \), where \( z \) is any real number. (Type expressions using \( z \) as the variable. Use integers or fractions for any numbers in the expressions.) C. There is no solution. The solution set is \( \varnothing \).

3-. Dados los conjuntos: \( A=\left(x \in R / \frac{x-1}{2}-\frac{x-2}{3} \geq 1\right) . \quad B=(x \in R /-3-2 x \geq 2\} \) y \( \quad C=\{x \in / 1 \leq 2-3 x<\mid 6\} \) a) Escribe a cada uno de ellos como intervalo.