Question

http://prntscr.com/crihaf I forgot how to do this.

Answer 1

FIRST:
what is the slope of the solid line

(it is simple - take the two endpoints from the graph and use delta y/delta x)

Answer 2

If you take the points I suggest tehn the answer is immediately evident
(it is simple - take the two endpoints from the graph and use delta y/delta x)

Answer 3

There is insufficient information. Your visual assumption of the points the line passes through hardly constitutes evidence of the actual points on the line.

Answer 4

Actually, based on the graph, you can see the intersection points.
So you can find the slope, the y-intercept, and basically the equation of both lines,

Answer 5

To get the line equation, you need a point on the line and the direction of the line. Or, 2 points on the line.

I would use points where the line goes through a cross in the gridlines and assume it is exactly over the gridline cross.

Some points on the line are (x,y)
(-2 , 5)
(0 , 4)
(2, 3)
(4,2)

You can use any 2 to get an equation.

Answer 6

@Gokuporter: Please become involved in this discussion. What do you understand, and what do you not understand?

Answer 7

@mhchen Actually, you are only assuming you see it as it is.



It's a right triangle because it is DEFINED to be so. Visual appearance is NOT significant.