Prove angle 1 being congruent to angle 4

we know the two triangles are congruent because BD = BD. Also, AD = CD because it is bisecting AC. Since these triangles are congruent, we know that congruent parts of congruent triangles are congruent, so angle 1 is congruent to angle 4.

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

-3.5 degrees per hour

step-by-step explanation:

find the unit rate:

-12   1/4 degrees           12.25 degrees

= - = -3.5 degrees per hour

      3   1/2 hours               3.5 hours