So im trying to my little brother with his home work an i suck at math so can anyone tell me what 5/9x54

Given a(-12,5) and b(12,29) find the point that divides the line segment ab three-eighths of the way from a to b

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

What does the sign of the slope tell you about a line?