Question

Which is true for all pairs of values in this table?

x 0 1 2 3 4

y -1 4 9 14


a. y=5x + 1 b. y=x+3 c. y=5x-1 d. y=2x+3

Answer 1

Its c
because y = 5x - 1 fits each pair of values


y = -1 = 5(0) - 1 = -1

y = 4 = 5(1) - 1 = 4

y = 9 = 5(2) - 1 = 9

Answer 2

The answer to this question would be: y=5x-1

To solve this question, you need to see what the value of Y when X=0. In this case, when X=0 the Y=-1
That means if the function is Y= AX+ C then the C would be:
Y= AX +C
-1= A(0) +C
C= -1

If you put the second equation where X=1 and Y=4 then
Y= AX +C
4= A(1) -1
4= a-1
a=5

The answer would be y=5x-1