Use the graph of f(x) and g(x) whet g(x)=f(k x) , determine the value of k

What is the approximate circumference of the circle shown below?

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.

Which expression is equivalent to -5(3x - 6/7)