Angles x and y are supplementary. angle x is 3 times the measure of angle y. what is the measure of angle x?

x = 135°

supplementary angles sum to 180° → x + y = 180

thus if x = 3y then

y + 3y = 180

4y = 180

divide both sides by 4

y = = 45 and x = 180 - 45 = 135°

step-by-step explanation:

hans did not square the 40-unit side; he merely multiplied it by 2.   incorrect.

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