Evaluate the expression −4x+7y

Question

when x=−2
and y=−4
.(1 point)
Responses

20
20

36
36

−36
negative 36

−20

Answer 1

To evaluate the expression \(-4x + 7y\) when \(x = -2\) and \(y = -4\), substitute the values of \(x\) and \(y\) into the expression:

\[ -4(-2) + 7(-4) \]

Now, calculate each term:

1. \(-4(-2) = 8\)
2. \(7(-4) = -28\)

Now combine the results:

\[ 8 - 28 = -20 \]

So, the value of the expression \(-4x + 7y\) when \(x = -2\) and \(y = -4\) is \(-20\).

The correct response is \(-20\).