Which equation does the graph of the systems of equations solve? two linear functions intersecting at 3, 2

−one thirdx + 1 = 2x − 4
one thirdx + 1 = −2x − 4
one thirdx + 1 = 2x − 4
−one thirdx − 1 = −2x − 4

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?

There are 15 plates and each plate is either 7 or 12 inches diameter. which systems of equations do you use to find the number of 7 inch plates, x and 12 inch plates, y

The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.