Question

The equation of a function is y= 4x+3. A second function contains the table of values below.
Which is true about the
X Y two functions?
-1 1
1 5
3 9
5 13

Answer 1

second function, the one in the table,
when x goes up 2, y goes up 4 always
so
y = (4/2) x + b = 2x+b
when x = 1, y = 5
so
5 = 2(1) + b
b = 3
so
y = 2 x + 3

both of your functions are straight lines that go through (0,3)
the original one has slope = 4
the second one has half that slope