JavaScript Inserting a variable into a string

[TTC]

Complete beginner, taking a JavaScript course on codecademy, the following problem has me stuck: Whenever I try to insert a variable into a string, teh dollar sign and curly brackets stay the same colour as the string and I get a syntax error whenever I try to run it. Even though the variable is already declared above, I type console.log, inside the parentheses I open the string ' and it goes yellow but when I type ${}, it stays the same color, even though I close the string with `.

How can I put a variable inside a string?
Thanks

 

[Johna]

Like this?

var x = "hello";
var y = x + " world";

 

[TTC]

Like this?

var x = "hello";
var y = x + " world";

No, this:
console.log(`etc etc etc: ${x}`)

I've gotten it, it was I was using ' instead of `

Thanks anyway!