Which equation is the inverse of y = 2x2 – 8? y = plus-or-minus startroot startfraction x + 8 over 2 endfraction endroot y = startfraction plus-or-minus startroot x + 8 endroot over 2 endfraction y = plus-or-minus startroot startfraction x over 2 endfraction + 8 endroot y = startfraction plus-or-minus startroot x endroot over 2 endfraction + 4

y = plus-or-minus StartRoot StartFraction x + 8 Over 2 EndFraction EndRoot

Step-by-step explanation:

Given:

The equation to find inverse is given as:

In order to find the inverse, we apply the following steps.

Step 1: Switch 'y' with 'x' and 'x' with 'y'. Thi gives,

Step 2: Now, again rewrite the above equation in terms of 'y'.

Adding 8 on both sides, we get:

Now, rewriting 'y' terms on the left side of the equation, we get

Dividing both sides by 2, we get:

Taking square root on both sides, we get:

Thus, the inverse of the given equation is .

So, the first option is correct.

94

step-by-step explanation:

average the numbers and use a variable to figure out the minimum to get a 90.

(79+94+91+92+x)/5=90

x = 94

df =

both have same length