12x+4y=1
6x-2y=3 substitution, elimination, or graphing ?

y = -5/8

x = 7/24

Step-by-step explanation:

elimination

12x + 4y = 1 | ×1 |

6x - 2y = 3 | ×2 |

12x + 4y = 1

12x - 4y = 6

--

8y = -5

y = -5/8

elimination

12x + 4y = 1 | ×1 |

6x - 2y = 3 | ×2 |

12x + 4y = 1

12x - 4y = 6

+

24x = 7

x = 7/24

answer: ok

step-by-step explanation:

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.