Question

Consider the equation y=2x²+9x+1.

When x=-1, what is the value of y?

Enter your answer as a number, like this: 42

Answer 1

sub -1 for x
remember pemdas
so

y=2(-1)²+9(-1)+1
y=2(1)-9+1
y=2-8
y=-6

the value of y is -6 when x=-1