3x + 1 = 25
Subtract 1 from both sides:
3x = 24
Divide both sides by 3:
x = 8
(2, -1)
y = 3x + 1
y = 3X - 1
If: 3x+5 = 4x+1 Then: x = 4
since y = 3x+1 we have y squared =(3x+1) squared x^2 + y^2 = 25 x^2 + (3x+1)^2=25 x^2 + 9x^2+ 6x+1 = 25 10x^2 + 6x + 1 = 25 10x^2 + 6x -24 = 0 solve x from quadratic formula x = 1.28 y = 3x + 1 = 4.83
(1, 1)
x + 2 = 3x-1 -2x = -3x = 1,5
It is called the commutative property, a + b = b + a
1
0 because X= -1
2x+5=3x+1 -x=-4 x=4
3x(2x + 1)