Two quantities, x and y, are directly proportional. if you take a third of x, what happens to y? it is tripled. it is cubed. it depends on the starting value of x. it is multiplied by 13.

Because X and Y are directly proportional, this means what ever happens to one, the same thing happens to the other one.

The correct answer would be: it depends on the starting value of x.

step-by-step explanation:

let

we know that

the y-intercept is the y-coordinate of the point when the value of x is equal to zero

so

the y-coordinate of the point a is the y-intercept

the answer part a) is

the value of y-intercept is

part b) find the slope m

we know that

the value of the slope is equal to

substitute the values

therefore

the answer part b) is

the value of the slope is equal to

the general answer is

the slope is

the value of y-intercept is

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step-by-step explanation: