Question

Evaluate -8y - 4x When x = -6. y = 9

Answer 1

-8(9)= -72; -4(-6)= 24; -72+24= -48

Answer 2

Answer:

-48

Step-by-step explanation:

We are given the expression:

$-8y-4x$

and asked to evaluated when x= -6 and y=9. Therefore, we must substitute -6 in for x and 9 in for y.

$-8(9)-4(-6)$

Solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, Subtraction.

Multiply -8 and 9 ⇔ -8*9= -72

$-72-4(-6)$

Multiply -4 and -6 ⇔ -4*-6=24

$-72+24$

Add 24 to -72.

$-48$

The expression -8y-4x when evaluated at x=-6 and y=9 is equal to -48.