Question

y = - 5x + 30
x = 10
what is the solution to the system of equations?
(-20, 10)
(10, -20)
(10, 4)
(4, 10)

Explanation:

Step1: Substitute x value

Given $x = 10$ and $y=-5x + 30$. Substitute $x = 10$ into $y=-5x + 30$.
$y=-5\times10 + 30$

Step2: Calculate y - value

First, calculate $-5\times10=-50$. Then $y=-50 + 30=-20$.

Answer:

$(10,-20)$