In the solution to this system of equations, you found that x=−10. Find the value of y.

Question

You’re trying to find the value of y when x=−10. You can use either equation to find the value of y. Start with y=2x+3. Substitute −10 for x in this equation.

y=2x+3
y=x−7

x
−10
=

y
=
2x
+
3
y
=
2
·

+
3

Answer 1

To find the value of \( y \) when \( x = -10 \), we can substitute \( -10 \) into the equation \( y = 2x + 3 \).

Starting with the equation: \[ y = 2x + 3 \]

Substitute \( x = -10 \): \[ y = 2(-10) + 3 \] \[ y = -20 + 3 \] \[ y = -17 \]

So, the value of \( y \) when \( x = -10 \) is: \[ \boxed{-17} \]