To find the matching \( y \) value for the equation \( y = 3x + 4 \) when \( x = 3 \), substitute \( 3 \) for \( x \):
\[ y = 3(3) + 4 \] \[ y = 9 + 4 \] \[ y = 13 \]
So, when \( x = 3 \), the matching \( y \) value is \( 13 \).
for the two variable equation y=3x+4, find the matching y value when x=3
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