How many triangles can be constructed with angles measuring 50,90, and 40

2 triangles

Step-by-step explanation:

The 90* angle is stable, so you can change only the position of the 50* and 40* angles.  

1 triangle: 40* is right to the 90*

2 triangle: 40* is left to the 90*

b

step-by-step explanation:

y = 3x+4

step-by-step explanation:

to find the slope

slope = (y2-y1)/ (x2-x1)

    = (-8-4)/ (-4-0)

    = -12/-4

  = 3

using the slope intercept form of a line

y= mx+b

we know the slope is 3

we know the y intercept is 4 ( the point where it crosses the y axis or x=0)

y = 3x+4