What is the opposite reciprocal of -2.4

Write an algebraic expression for the word expression the quotient of c and 8

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

Which statements are true? check all that apply. the line x = 0 is perpendicular to the line y = –3. all lines that are parallel to the y-axis are vertical lines. all lines that are perpendicular to the x-axis have a slope of 0. the equation of the line parallel to the x-axis that passes through the point (2, –6) is x = 2. the equation of the line perpendicular to the y-axis that passes through the point (–5, 1) is y = 1.