The number of silver cars that need to be added will be 100.
A ratio is a group of sequentially ordered numbers a and b expressed as a/b, where b is never equal to zero. When two objects are equal, a statement is said to be proportional.
Minxia counted 40 green vehicles and 20 silver vehicles in the parking garage. On the off chance that the quantity of green vehicles remains something similar.
Let 'x' be the number of silver cars that need to be added.
If the ratio of green cars to silver cars is 1: 3. Then the number of silver cars that need to be added will be given as,
40 / (x + 20) = 1 / 3
Simplify the equation, then we have
40 / (x + 20) = 1 / 3
(x + 20) = 40 x 3
x + 20 = 120
x = 100
The number of silver cars that need to be added will be 100.
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line b
line c
line d
The line which represents the direct variation equation y = 1/2 x is: line c.
We know that every straight line has the equation
y = (slope) x + (y-intercept) .
Here, we have, this line y = 1/2 x,
the equation doesn't show any y-intercept.
The y-intercept is zero,
meaning that the line crosses the y-axis at the place where y=0.
That's the origin where the x- and y-axes cross.
so, we get, the line goes through the origin.
from the given graph we get,
There are only two lines there that go through the origin,
so one of those is the answer to the question.
Now, we have to find the slope of a line.
we know that,
If the slope of a line is positive, that means it rises as it goes.
If the slope of a line is negative, that means it falls as it goes.
The equation of the line is [ y = 1/2 x ].
The slope is 1/2 .
That's positive.
The line on the graph slopes up.
so, we get,
In the picture, that can only be line 'c' .
Hence, The line which represents the direct variation equation y = 1/2 x is: line c.
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