Solve the given system by substitution.

Write the system of equations represented by the matrix. 0 1 2 4 -2 3 6 9 1 0 1 3

Eric has challenged himself to walk 24,000 steps in 4 days. if eric walks the same number of steps each day, which function represents the number of steps eric still needs to walk to reach his goal with respect to the number of days since he started his challenge? a. y = 8,000x − 24,000 b. y = -8,000x + 24,000 c. y = 6,000x − 24,000 d. y = -6,000x + 24,000

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2