Find the slopes between points:
(27-7)/(3+2) = 4
(35-27)/(5-3) = 4
So, start with y = 4x
That doesn't quite fit, so find what you have to add to each 4x value to bring it into line.
Write the function represented by the table as an equation
x. y.
-2. 7
3. 27
5. 35
2 answers
(-2, 7), (3, 27), (5, 35).
Y = mx+b,
m = (27-7)/(3+2) = 20/5 = 4.
(-2, 7).
Y = 4*(-2) + b = 7,
-8+b = 7,
b = 15.
Eq: Y = 4x + 15.
Y = mx+b,
m = (27-7)/(3+2) = 20/5 = 4.
(-2, 7).
Y = 4*(-2) + b = 7,
-8+b = 7,
b = 15.
Eq: Y = 4x + 15.