Question

a
$y = 4$
$x = -5y + 6$
$x = -5(4) + 6$
$x = -20 + 6 = -14$

Explanation:

Step1: Identify given substitution value

$y = 4$

Step2: Substitute y into the equation

$x = -5(4) + 6$

Step3: Calculate the product term

$x = -20 + 6$

Step4: Compute final x value

$x = -14$

Answer:

$x = -14$