Write an equation for a line with a slope of -2, and a y-intercept of 1.

y = -2x + 1

Step-by-step explanation:

y = mx+b

m =  slope

b = y intecept

plug in slop and y intercept

Step-by-step explanation:

The general equation is

y = mx + b

m is the slope, which is - 2

b is the y intercept which is (0,1)

The equation is

y = -2x + 1

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.