Question

A table of values of a linear function is shown below.

X:0,1,2,3,4
Y:-1,2,5,8,11
Find the y-intercept and slope of the function's graph, and find the equation for the function.

Answer 1

y-intercept=–1

slope=3

and the final formula=

y=3x–1

Explanation:

y=mx+b

`m = (y2 - y1)/(x2 - x1) = = > \\ m = (5 - 2)/(2 - 1) = = > m = 3`

`y = 3x + b = = > - 1 = 3(0) + b = = > \\b = - 1`