Question

real numbers
evaluating a linear expression: integer multiplication with addition or...
evaluate the expression when $a=5$ and $y=-5$.
$y-9a$

Explanation:

Step1: Substitute given values

Substitute $a=5$ and $y=-5$ into $y-9a$:
$(-5) - 9(5)$

Step2: Perform multiplication first

Calculate the product term:
$9(5) = 45$, so expression becomes $-5 - 45$

Step3: Compute final subtraction

Subtract the two values:
$-5 - 45 = -50$

Answer:

$-50$