Decide which of the following equations represents a proportional relationship.(1 point)

Responses

y=13x
y equals Start Fraction 1 over 3 End Fraction x

y=x3−3
y equals Start Fraction x over 3 End Fraction minus 3

y=3x+1
y equals 3 x plus 1

y=x+3

y=13x

Using the graph, derive the equation of the line in slope-intercept form.

(1 point)
Responses

y=3x−4
y equals 3 x minus 4

3x−y=4
3 x minus y equals 4

y=3x+4
y equals 3 x plus 4

y=−3x−4

y=3x-4