In the triangle, x= 3. Find y.

What term best describes a line ans a point that lie in the same plane

Cassie is traveling 675 miles today to visit her brother and his family. so far, she has stopped for gas three times. at the first stop, she put in 7.1 gallons of gas and paid $23.79. at her second stop, she put in 5.8 gallons of gas and paid $19.08. and, at the third stop, 6.6 gallons and paid $20.39. at which stop did casey pay the most for gas?

Ineed to know the ordered pairs for this equation i need the answer quick because it’s a timed test