Question

the table shows values for a function

x|1|2|3 | 4|
y|4|9|16|25|

which equation represents this function

A. y=x^2
B. y=x^2+1
C. y= (x - 1)^2
D. y= (x + 1)^2

Answer 1

plug in values of x and y and see if they fit

Answer 2

Just plug it in,
Using rule D
(1+1)^2 = 4
(2+1)^2= 9
D is ur answer

Answer 3

for example y = x^2
y = 4 and x = 1

y = 4
x^2 = 1^2 = 1

- not equal so ist not A