Find the equation of the line. Use exact numbers
y =
2+
y
4
9+
8+
7+
6+
5+
4
3+
2
1
+2
1 2 3 4 5 6 7 8 9
-9-8-7-6-5-4-3/2
-2
-3
-5-
-6-
-7-
-8-
-97

Step-by-step explanation:

two points on the line are (-2,0) and (0,4)

slope=(y2-y1)/(x2-x1)=(4-0)/(0-(-2))=4/2=2

eq. of line is y-0=2(x-(-2))

y=2(x+2)

y=2x+4

answer: the price of one pound cabbage = $ 0.8

the point (10,8) represents that the cost of 10 pounds cabbage is $ 8

step-by-step explanation:

since, here is a proportional relation between the number of pounds of cabbage (x) and the price in dollars (y).

therefore, we can write,

⇒ y = k x

where k is the constant of proportionality.

now, point (5,4) is in the line.

thus, it will satisfies the above equation of line.

⇒ 4 = 5 k

⇒ k = 0.8

thus, the equation of the line is,

y = 0.8 x

a) for x = 1,

y = 0.8

therefore, the cost of one pound of cabbage is 0.8 dollars.

b) in the below graph (10,8) represents that the cost of 10 pounds of cabbage is 8 dollars.

21

step-by-step explanation: