Recall that if a line is parallel to the vector v and passes through the point p0, which is the tip of the position vector r0, then the vector equation of the line is given by r(t) = r0 + tv. for the given line, we have r0 = 7, −8, 3 and v = 1, 6, − 1 3 . so the vector equation for this line is r(t) = 7, −8, 3 + t 1, 6, − 1 3 = .

A1500 w electric heater is plugged into the outlet of a 120 v circuit that has a 20 a circuit breaker. you plug an electric hair dryer into the same outlet. the hair dryer has power settings of 600 w, 900 w , 1200 w, and 1500 w. you start with the hair dryer on the 600 w setting and increase the power setting until the circuit breaker trips. under what setting does the circuit breaker trip.