Question

The table below represents a function.

x y
0 1
2 5
5 26
7 50
Which equation makes the table true?



f(x) = 2x + 1

f(x) = x 2 + 1

f(x) = 2x - 1

f(x) = x 2 - 1

Answer 1

ok - the only way to do this is by trial and error

look at the first equation y= f(x) = 2x+1

Take the pairs from the table and put them in the equation so:

1 = 2*0+ 1 (true)
5= 2*2 + 1 (true)
26 = 2*5 + 1 (FALSE)

SO the equation is not true for all the points in th table therefore a is not the answer

DO the same for the other 3 equations = one of them will give true answers fro all the pairs in the table..

Answer 2

ok thnx