Video Transcript
Evaluate 𝑓 of two, given that 𝑓 of 𝑥 is equal to three 𝑥 plus seven.
In this question, we’re given the linear function 𝑓 of 𝑥 is equal to three 𝑥 plus seven. In order to evaluate 𝑓of two, we need to substitute 𝑥 equals two into the function. As three 𝑥 means three multiplied by 𝑥, we need to multiply three by two and then add seven. This is equal to 13.
If 𝑓 of 𝑥 is equal to three 𝑥 plus seven, then 𝑓 of two is 13.
