Answer:
45
Step-by-step explanation:
The points on the graph :
(4, 180) ; (7, 135)
x1 = 4 ; y1 = 180
x2 = 7 ; y2 = 315
The number of soda bottles the machine can make in a minute is the gradient or slope :
Gradient = change in y / change in x
Gradient = (y2 - y1) / (x2 - x1)
Gradient = (315 - 180) / (7 - 4)
Gradient = 135 / 3
Gradient = 45
Hence, the machine can make 45 soda bottles in a minute.
(1) x = 2y
(2) x + 4 = 3y + 1
subtitute (1) to (2)
2y + 4 = 3y + 1 |subtract 4 from both sides
2y = 3y - 3 |subtract 3y from both sides
-y = -3 |change the signs
y = 3
subtitute the value of y to (1)
x = 2 · 3
x = 6
Answer: x = 6 and y = 3.
30/100 ÷ 10 = 3/10
Hope it helped!
Answer:
(-2,4)
Step-by-step explanation:
