Question

Given: f(x)= 3x-7 for x>0f(x)=-2x+3 for x<0 Find: f(-5) Answers: 13-22-13None

Answer 1

,Given that:

`\begin{gathered} f(x)=3x-7,x>0 \\ f(x)=-2x+3,x<0 \end{gathered}`

Find

`f(-5)`

From the question, we can see that -5 is less than 0 (- 5 < 0) and with this condition, the equation to satisfy this condition will be

`f(x)=-2x+3`

Hence,

susbstitute the value of x = -5 in the function above

`\begin{gathered} f(x)=-2x+3 \\ f(-5)=-2(-5)+3 \\ f(-5)=10+3 \\ f(-5)=13 \end{gathered}`

Hence,

The value of f( -5 ) = 13