Two of the angles of a triangle measure 30◦ and 45◦. How many degrees does the remaining angle measure? A) 60
B) 75
C) 90
D) 105
E) Other

m∠a is 90°

m∠b is 40°

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