To write the equation of a line I need slope and y intercept (0,y)I have y intercept (0,7) of +7 as written in the equationThe equation y=-5/4x + 11/4 has a slope of -5/4To get perpendicular slope is negated reciprocalso take -5/4 and flip it -4/5 and change the sign (in this case negative to positive) 4/5so the new equation is y=4/5x +7 (third one)
because this is a supplementary angle, you add everything and set it equal to 180 degrees. so it would be x + 100 + 3x = 180. combine like terms to get 100 + 4x = 180. subtract 100 from both sides to get 4x = 80. divide by 4 on both sides to isolate the x and your final answer is 20. hope this helped! good luck in school xoxo
