Which function is described by values in the table?

x y

1 8

3 6

5 4

7 2

a) y = - 2x + 10

b) y = - 2x + 9

c) y = - x + 9

d) y = - x + 10

Question

Braedon Salas

Mathematics

30 September, 01:07

Which function is described by values in the table?

x y

1 8

3 6

5 4

7 2

a) y = - 2x + 10

b) y = - 2x + 9

c) y = - x + 9

d) y = - x + 10

+5

Answers (1)

Know the Answer?

Yusuf Nelson · Answer 1

One way to approach this problem is to go ahead and find the actual equation in slope-intercept form.

The slope of the line thru (3,6) and (5,4) is m = (6-4) / (3-5), or - 2/2, or - 1.

Subbing the known values of m, x and y, we get:

4 = - (5) + b. Then b = 9.

The correct equation (representing the data values in the table) is y = - x + 9.

Which function is described by values in the table?x y1 83 65 47 2a) y = - 2x + 10b) y = - 2x + 9c) y = - x + 9d) y = - x + 10

Which function is described by values in the table?

x y

1 8

3 6

5 4

7 2

a) y = - 2x + 10

b) y = - 2x + 9

c) y = - x + 9

d) y = - x + 10