The axis of symmetry of the given parabola ?

Step-by-step explanation:

This is actually a tough question, but only because you need to be told how your instructor wants it to be done. The way I did it was

(What you should get - what you got) * 100    

                         = % error

What you should get

What you should get is 1.8

What you got should be 1.7

(1.8 - 1.7) * 100 / 1.8

.1 * 100 / 1.8

10 / 1.8 = 5.56%

Note: what really makes this difficult is whether you allow for a negative experimental error or not. Sometimes it is the absolute value taken as the difference. Sometimes it is taken as (the experimental value - accepted value) / accepted value.

In this case the answer might be - 5.56%. You have to check your notes to get the correct answer according to the field of study.