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What is the equation of the line? Be sure to scroll down first to see all answer options. (-3,9) (0,0)

What is the equation of the line? Be sure to scroll down first to see all answer options-example-1
User Poulo
by
7.2k points

2 Answers

4 votes

Answer:

y = -3x

Explanation:

it's what the test said

User Sabhari Karthik
by
8.2k points
3 votes

Answer:

Option D
y=-3x

Explanation:

we have the points

(-3,9) and (0,0)

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form
y/x=k or
y=kx

In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin

In this problem the line passes through the origin, then the line represent a direct variation

Find the constant of proportionality k


k=y/x

For the point (-3,9)


k=9/-3=-3

so

the equation is


y=-3x

User Bartosz Gajda
by
8.5k points

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