Question

Find the value of 9x + 4y when x = 4 and y=-5

Answer 1

16

Explanation:

substitute the values into the equation

9(4)+4(-5)

solve...

36-20=16

Answer 2

16

Explanation:

9x + 4y

Let x =4 and y = -5

9(4)+ 4(-5)

36 -20

16