Question

Evaluate the expression below when y = -3.

Answer 1

Start with the given equation:
$2y+7$
Substitute known values:
$2(-3)+7$
Evaluate:
$-6+7=1$


Similarly:
$-4y-10$
$-4(-3)-10$
$12-10=2$

Answer 2

replace y with -3

2y + 7 becomes 2(-3) + 7 = -6 +7 =1

-4(-3)-10 = 12-10 = 2