What is the rate of change seen in the graph below?

Is the orthocenter of a triangle on the inside ?

Omar is going on a road trip! the car rental company offers him two types of cars. each car has a fixed price, but he also needs to consider the cost of fuel. the first car costs $90 to rent, and because of its fuel consumption rate, there's an additional cost of s0.50 per kilometer driven.

What is the value of x in the equation7x+2y=48 when y=3