algebra
posted by **LB** .
Tell whether equation represents direct variation. If so, identify the constant of variation
1. Y=8x
Ans: yes, it represents direct variation because
its in the form Y=kx. Constant of variation: 8
2. Y=2x+1
3. 3x+y=6
Please help, not too sure if I am understanding this correctly. Completed first problem.

First problem is correct.
A direct variation will have the yintercept as zero, so it is in the form
y=kx, where k is a constant.
In other words, a direct variation is a straight line that passes through the origin.
Q2 and Q3 are not direct variations, because the yintercepts are 1 and 6 respectively. 
y=2x+1 yes 2x

hello
Respond to this Question
Similar Questions

Math
I am doing Direct Variation in math. I don't understand how to do it. It would be very helpful if you helped me with these problems: Is each equation a direct Variation? 
direct variation or neither
Tell whether the equation represents direct variation or neither, 7=3x+2 represents A) represents inverse variation B) represents direct variation C) represents neither. 
algebra
Tell whether equation represents direct variation. If so, identify the constant of variation 
Math steve or ms. sue
does the data in the table represent a direct variation or an inverse variation? 
Algebra 2
Is the relationship between the variables in the table a direct variation, an inverse variation, both, or neither? 
Math
Is 12x = 6y a direct variation? If so what is the constant of variation. My answer is yes it is a direct variation and the constant of variation is 2 but I want to make sure. Please help 
Algebra 2 Honors
Hey, we recently started a topic in class that I don't understand well, I just want to post 6 of the problems and ask if they're right or not (some of them I have no idea how to do). 1. If a varies directly as b and b = 18 when a = … 
Algebra worksheet
Hello. My algebra teacher gave me this worksheet last week and everyone had to bring it yesterday and I haven't done it yet. Can someone please help me. He said Friday is the last day or he's going to take away some points. I've been … 
math
Is the relationship between the variables in the table direct variation, inverse variation, both, or neither? 
Math
8y = 2x 7 +9y +7= 2x Determine whether each equation represents a direct variation. If it does, find the constant of variation.