try a straight line
y = a + b x
13 = a + b (5)
19 = a + b (7)
------------------subtract
-6 = -2 b
b = 3
then 13 = a + 15 so a = -2
y = -2 + 3 x
now if x = 12
y = -2 + 3*12 = -2 + 36 = 34 !!!! Caramba !!!!
how aout x = 7 then ?
y = -2 + 3*7 = 19
we did it again
so y = -2 + 3 x
now if y = 10
then 10 = -2 + 3 x
12 = 3 x
x = 4 BUT YOU SAID 2 !!!!!
Hey I just need an answer check here
Q x: j, 5, , 7, 10 , 12
y: 10,13,19, k,34
A:k=24 J=2
I think am I right if not how do i get the right answer?
1 answer