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Is
(-1,-8) a solution to the equation
y=-x--9 ?
yes
no

Is $(-1,-8)$ a solution to the equation $y=-x--9$ ? $\newline$ yes $\newline$ no

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Is (x, y) a solution to the linear equation?

Full solution

Q. Is

(-1,-8)

a solution to the equation

y=-x--9

?

\newline

yes

\newline

no

Understand the equation: Understand the equation. $\newline$ The equation given is $y = -x - 9$ , which seems to have a double negative before the $9$ . This should be simplified to $y = -x + 9$ .
Substitute values: Substitute the $x$ and $y$ values from the point $(-1,-8)$ into the simplified equation. $\newline$ Substitute $x = -1$ and $y = -8$ into the equation $y = -x + 9$ to see if the equation holds true.
Perform substitution: Perform the substitution and simplify. $\newline$ Substituting the values, we get $-8 = -(-1) + 9$ . $\newline$ Simplify the right side: $-8 = 1 + 9$ .
Add numbers: Add the numbers on the right side of the equation. $\newline$ Adding $1$ and $9$ , we get $-8 = 10$ .
Check equality: Check if both sides of the equation are equal. $\newline$ The left side is $-8$ , and the right side is $10$ . These two values are not equal, which means the point $(-1,-8)$ is not a solution to the equation $y = -x + 9$ .

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