Question

Without graphing the linear functions, find the coordinates of the point of intersection of their graphs: y=3x−11 and y=4

Answer 1

(5, 4)

Explanation:

given the 2 equations

y = 3x - 11 → (1)

y = 4 → (2)

Substitute y = 4 into (1)

3x - 11 = 4 ( add 11 to both sides )

3x = 15 ( divide both sides by 3 )

x = 5

solution is (x , y) = (5, 4)