(2, 3)
27-9 =18. 18/3 =6
25-7=18 18/3=6
x^2+3x-18=0 (x+6)(x-3)=0
-3 + 3x + 6x = 15 combine like terms 6x and 3x are like terms as are -3 and 15 9x = 18 x = 2
5x+18 = 2x+9 5x-2x = 9-18 3x = -9 x = -3 and y = 3
x = 0
y equals 3x plus 3 is slope intercept form.
X2 + 3X - 18 = 0What two factors of - 18 add up to 3 ??(X - 3)(X + 6)============so, by the zero sum rule,X = 3X = - 6
3x + 7y = 3*x + 7*y = 3*6 + 7*4 = 18 + 28 = 46
if 3x+7 = 3 then 3x = 3-7 3x = -4 then, x = -4/3
x2 + 3x - 18 = 0 (x - 3)(x + 6) = 0 x = 3 or -6