Question

Select all that apply.

Which graphed lines represent direct variation functions?


line d
line b
line c
line a

Answer 1

The equation they gave you is [ y = 1/2 x ].

The slope is 1/2. That's positive.

The line on the graph slopes up. To walk it, you have to climb.

Answer 2

Hope this helps~

Explanation:

Look at the graph they gave you. ... At first it looks like an ugly mess.

But look closer. There are only two lines there that go through the origin,

so one of those is the answer to the question.

Now let's talk about the slope of a line.

-- If the slope of a line is positive, that means it rises as it goes.

If you walk the graph from left to right, you're climbing.

-- If the slope of a line is negative, that means it falls as it goes.

If you walk the graph from left to right, you're going down-hill.

The equation they gave you is [ y = 1/2 x ].

The slope is 1/2 . That's positive.

The line on the graph slopes up. To walk it, you have to climb.

In the picture, that can only be line 'c' .