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 \( x = -10 \) using the equation \( y = 2x + 3 \), you can substitute \( -10 \) for \( x \):

\[
y = 2(-10) + 3
\]

Now, perform the calculation:

\[
y = -20 + 3
\]

\[
y = -17
\]

Thus, the value of \( y \) when \( x = -10 \) is \(-17\).

So the final answer is:

\[
y = -17
\]