It’s given that y=2x-3 if x=4 find y

To find the variable of "y", substitute or "plug the value of" variable "x" into the equation expression formed by variable "y". It is already isolated for the variable "y" and does not require any additional steps to solve for that particular variable. So, just put two value of "x = 4" back into our original expression of "y = 2x - 3". Here, 2 is multiplied by a variable of "x" for which it is mentioned the value of variable "x" is equivalent to "4". Then, just subtract it by the value of "3", to get the final answer. Just like this:













Hope it helps.

Here are the answers to the ones that i could see.