What is the value of the second one in 15.186

answer:

(0,8)

(1, 10)

(-1, 6)

step-by-step explanation:

slope intercept form is y = mx + b

the be is your y intercept (0,8)

the m is your slope (2) by putting a one under it you can graph it more easily:

to get your next point follow the slope which is

what this means is we follow the fraction and go up 2 and right one (positive slope) or down 2 and left one (positive slope) to get our next points

for a negative slope it would be up and then left or down and then right

answer:

discriminant is 36.

x²-4x-5 =   0 have two real solutions.

step-by-step explanation:

given equation is :

x²-4x-5=   0

we have to find discriminant of above equation.

general quadratic equation is :

ax²+bx+c =   0

comparing general equation with quadratic equation,we get

a =   1 ,b=   -4 and c =   -5

the formula to find discriminant is :

d =   b²-4ac

putting the values of a,b and c in formula to find discriminant,we get

d =   (-4)²-4()

d   =   16+20

d =   36 > 0

if an equation has discriminant real and perfect square ,there are exactly two real solutions.

hence, 36 is real and greater than zero,so give equation have two real solution.