when goes up one, y goes up two
so
in
y = m x + b
the slope m = 2
y = 2 x + b
if x = 0
y = 2*0 + b
so 3 = b
y = 2 x + 3
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check
if x = 3, y better be 9
y = 2 * 3 + 3
y = 6 + 3
whch sure enough is 9
Please help with function rule
X Y
-1 1
0 3
1 5
2 7
3 9
Thank you
1 answer