Question

In the solution to this system of equations, you found that x=−10. Find the value of y.
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:
\[
\boxed{-17}
\]