CAN SOMEONE PLZ HELP ME WIT THIS

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)

Asa a yogurt shop allows its customers to add, for no charge, 3 toppings to any yogurt purchased. if the store has 18 possible toppings, how many different 3-topping combinations can a customers choose?

What are the domain and range of the function on the graph? the domain includes all integers, and the range is y 2 0.the domain includes all integers, and the range is y> 0.the domain includes all real numbers, and the range isy20.the domain includes all real numbers, and the range is