List the midline , amplitude and period of the graph then write an equation

Which value of m will create a system of parallel lines with no solution? y= mx - 6 8x - 4y = 12

Write the equations in logarithmic form 10^3=1,000

Grace is standing 18 feet from a lighthouse and kelly is standing 10 feet from grace. the angle that grace looks up to see the top of the lighthouse is 45°. the angle that kelly looks up to see the top of the lighthouse is y°. find the height, h, of the lighthouse. find the angle, rounded to the nearest tenth of a degree, in which kelly looks up to the top of the lighthouse. to the nearest tenth of a degree, find the value of x° . in two or more sentences, explain your calculations