Question

Find the equation of the linear function represented by the table below in slope-

intercept form.
X
0
1
2
3
4.
у
9
18
27 36
45

Answer 1

y = 9x + 9

Explanation:

so the points are:

(0,9) (1, 18) (2, 27) (3, 36) (4, 45)

since the y intercept is when x is 0 write it in the equation!

y = mx + 9

now to solve for slope

use the equation y2 - y1/ x2 - x1 or y1 - y2/x1 - x2

sooo use (1, 18) and (2, 27)

27 - 18/2 - 1

9 / 1 = 9

y = 9x + 9

check with the points you did not use!

(3, 36)

36 = 9(3) + 9 ?

36 = 27 + 9?

36 = 36