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

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Answer 1 · 2017-01-09T21:56:21

Substitute $7$ $color(red)(7)$ for $x$ $x$ in the equation and $- 2$ $color(blue)(-2)$ for $y$ $y$ in the equation and see if the equation is true:

$(3 \times 7) + (4 \times - 2) = 29$ $(3 xx color(red)(7)) + (4 xx color(blue)(-2)) = 29$

$21 + - 8 = 29$ $21 + -8 = 29$

$13 \neq 29$ $13 != 29$ this point does not satisfy the equation.

How do you show whether the point (7,-2) satisfies the equation 3x+4y=293x+4y=293x+4y=29?