Find the difference quotient for f(x)=2x+1

The difference quotient or simply the derivative of a function is,

Here the derivative is,

So the difference quotient of your linear function is its slope namely 2.

Hope this helps.

1)is not similar since corresponding sides are not in the same ratio

2)are similar since corresponding sides are in the same ratio and corresponding angles are equal

hope it will

#faazmessi