7
No.The roots are the complex conjugate pair 5 ± 2.4495iwhere i is the imaginary square root of -1.
y = 5xy' = 5xln5 = ln5(5x)y" = ln5(5xln5) = (ln5)25x = 2.59(5x)
3
Ordered pairs are not specified. if it is like (0,5),(0,1),(0,0),.... then we may find the answer, which then shows the family of different lines according to ordered pairs.
5x=4y=-20 x=-4 y=-5 (-4,-5) is the ordered pair
There are an infinite number of ordered pairs. (-5, -7) is one pair
The ordered pair is (5, 4).
k
{-4,-5}
7
15
The lines intersect at (3, 5)
x = -6 y = -11
12
These are equations of two straight lines. Provided the equations are not of the same or parallel lines, there can be only one ordered pair. So the ordered pair is - not are : (0.5, -1)
x = 5 and y = 4