Question

Which equation best fits the data in the table?

x: 1, 2, 3, 4
y: 5, 7, 7, 11
a.) y = x + 4
b.) y = 2x + 3
c.) y = 7
d.) y = 4x - 5

Answer 1

Put the values as coordinates (x,y)
(1, 5) and (2, 7)

Find the slope:
(7-5)/(2-1)
m=2

Find the y intercept:
y=mx+b
y=2x+b
5=2(1)+b
b=3

b.) y = 2x + 3

Hope this helps :)