What is the solution to the system of equations?

y = - 5x + 30

x = 10

(-20. 10)

(10, - 20)

(10, 4)

(4, 10)

Y = - 5 (10) + 30

Y = - 50 + 30

Y = - 20

Answer: B. (10, - 20)

Apply substitution

y = - 5x + 30

y = - 5*10 + 30 ... replace x with 10, since x = 10 is given

y = - 50 + 30

y = - 20

So x = 10 and y = - 20 pair up to form the solution of the system.