Question

Which three expressions in the table below have a solution of 10 when
x = -1 and y = 2

Answer 1

The expressions are;

-5(x)(y)

8-y/x

Explanation:

Here, we want to select expressions on the table having a solution of 10, given the value of x and y

For ;

-x(10) = -1(10) = -10

x + y + 7

-1 +2 + 7 = 8

8 -y/x = 8-(2/-1) = 8 + 2 = 10

-5(x)(y)

= -5(-1)(2) = 10

16-x + y - 7

16-(-1) + 2 - 7

16 + 1 + 2 - 7 = 12