The quantities x and y are proportional. Y 3 30 10 100 16 160 Find the constant of proportionality (r) in the equation y = rx. r =

10

Step-by-step explanation:

1 / 3

What times x gives us y?

Hint 2 / 3

If we multiply each x-value by 10

we get to each corresponding y-value:

y=10x

The constant of proportionality is y= r x is 10

x=-2

infinite number of lines, so there is an infinite number of equations.

step-by-step explanation:

there are an infinite number of line that passes through the point (-2,5)

x=-2   is one line that passes through the point

y = 5 is another line that passes through the point

(these two lines are perpendicular to each other).

since the number of   numbers are infinite and the slope is the ratio of two numbers,(change in y over change in x) we can have an infinite number of slopes.     our only condition is that it passes through the point (-2,5)

answer: for each 3 girls there is 2 boys . 3: 2

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