Question

3

Which equation best describes the graph?
y
8
6
2
-8
-6
-4
2
4
6
-2
-6
-8
A y = 2x + 4
C y = –2x + ]
B
= 3x+4
y
O y=-3x+4

No links please

Answer 1

D) y = -1/2x + 4

Explanation:

Points on the graph: (0, 4) and (8, 0)

Slope:

m=(y2-y1)/(x2-x1)

m=(0 - 4)/(8-0)

m= -4/8

m = -1/2

Slope-intercept:

y - y1 = m(x - x1)

y - 4 = -1/2(x - 0)

y - 4 = -1/2x

y = -1/2x + 4