Question

If y = 3x squared + 4 find the value of y when x = 2

Answer 1

y = 16

Explanation:

Let's solve your equation together

3x^2 + 4

We have been given that x = 2

So first we must replace x by 2.

y = 3(2)^2 + 4

Now we solve the equation

2^2 = 4

y = 3(4) + 4

3 * 4 = 12

y = 12 + 4

12 + 4 = 16

y = 16

Hope this helps :)

Answer 2

The value of y is 16.

Explanation:

You have to substitute x = 2 into the equation :

`y = {3x}^(2) + 4`

Let x = 2,

`y = 3( {2)}^(2) + 4`

`y = 3(4) + 4`

`y = 12 + 4`

`y = 16`