3x+y = 4 y = -3x+4 Perpendicular slope: 1/3
one is y=3x+3 so is y=3x+5
3x
(a) y = -3x + 1
X = -2(13 + y) / 3x = 5y / 4 - 1
y = 3X - 1
y = 3x + 1
1
It is: 1
y = 3x + 1 y = 3(1) + 1 y = 3 + 1 Y = 4
1
x =1, y=1
x = 1 and y = -2
y=10
y=3x+4 -3x+y=4 x=-1/3
y = 3x + 1 y = 3x + 2 y = 3x + 3 y = 3x
Both equations are equal and so: 3x+1 = 2x+3 3x-2x = 3-1 x = 2 and by substituting y = 7