Question

What is the effect of the graph of the equation y=3/7x + 6 is changed to y=3/7x -2?

A. The line is shifted right 8 units

B. The line is shifted down 8 units

C. The line is shifted left 8 units

D. The line is shifted up 8 unit

Answer 1

B. The line is shifted down 8 units

Explanation:

f(x) + n - shift the graph n units up

f(x) - n - shift the graph n units down

f(x + n) - shift the graph n units to the left

f(x - n) - shift the graph n units to the right

==============================================

We have y = 3/7x + 6. It has been changed to y = 3/7x - 2.

y = 3/7x + 6 → f(x) = 3/7x + 6

f(x) - 8 = (3/7x + 6) - 8 = 3/7x + 6 - 8 = 3/7x - 2

Answer 2

down 8 units

Explanation:

going from +6 to -2 goes down 8 units