Question

A line of best fit is drawn for the set of points shown on the graph. Which point is an approximate for x=30 from the line of best fit?

(23,30)
(30,38)
(44,30)
(30,72)

Answer 1

(30,38)

Explanation:

y=mx+b

Slope looks like 4/4 = 1

Y-int (b) = 4

so y = 1x+4

If x = 30, then y = 34 give or take a few

(30,38) is the closest

Answer 2

(30,38)

Explanation:

Q asking 4 an approximate for x=30

so (23,30) n (44,30) are out

from the line of best fit:

x=0, y=4

x=16, y=22

so when x increases by 16, y increases by 22-4=18

so at x=32, y=22+18=40

at x=30, the nearest n best ans is (30,38)