# How do you show whether the point (7,-2) satisfies the equation 3x+4y=29?

Substitute $\textcolor{red}{7}$ for $x$ in the equation and $\textcolor{b l u e}{- 2}$ for $y$ in the equation and see if the equation is true:
$\left(3 \times \textcolor{red}{7}\right) + \left(4 \times \textcolor{b l u e}{- 2}\right) = 29$
$21 + - 8 = 29$
$13 \ne 29$ this point does not satisfy the equation.