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THIS IS A TEST ALL CORRECT ANSWERS ONLY !

Evaluate the expression −4x+7y
when x=−2
and y=−4
.(1 point)
Responses

36
36

−36
negative 36

20
20

−20

1 answer

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:

  1. Calculate \(-4(-2)\): \[ -4 \times -2 = 8 \]

  2. Calculate \(7(-4)\): \[ 7 \times -4 = -28 \]

Now combine these results: \[ 8 + (-28) = 8 - 28 = -20 \]

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

The correct answer is: −20.