Answer:
7,-2 and -1,14
Step-by-step explanation:
Y = kx + b
(0,9) x = 0; y = 9
y = kx + b
9 = k*0 + b
9 = b
(3,0) x = 3; y = 0
y = kx + 9
0 = k*3 + 9
-9 = 3k
k = -3
<span>The equation of a line y = -3x + 9</span>
Answer:
6x+y=13
Step-by-step explanation:
Answer:
The number of math books is 477.
Step-by-step explanation:
Given that,
In the library, the ratio of the number of math book to the number of English books to the number of science books is 3:7:2.
Assume,
The number of math books, english books and science books are 3x,7x and 2x respectively.
There are 318 books science book in the library.
According to the problem,
2x=318

⇒ x=159
The number of math books is = 3x
=3×159
=477