You mean Y=x^2 + 4x + 4, this is quadratic function (convex parabola) which standard form is y=ax^2+bx+c
1. First we will find zero of the function, y=0 or as you like intersection
with x axis.
y=0 =>. x^2+4x+4=0 => this is the square of the binomial ( x + 2)^2 = 0
=> x + 2 = 0 => x= -2 In this case it's a touch point with x axis.
2. Intersection with y axis => If x=0 => y=4 (0, 4)
3. The coordinate of vertex are x= - b/2a = - 4/2 = -2 and y=(4ac-b^2)/4a
y= (4* 1*4 - 4^2)/ 4 = (16-16)/4= 0 Vmin ( -2, 0) this point is at same time zero of the function.
4. Domain:. Dx=R (field of real numbers)
5. Range: y belong to interval ( - infinite, 0) or R-
6. Function's sign y>0 => x belong to intervals (-infinite, -2) U ( -2, +infinite)
7. Function's growth or decline
for x belong interval ( -infinite, -2) => function decline
for x belong interval ( -2, +infinite) => function is growing
Thats all !!!!!!
Answer:
4x=y
Step-by-step explanation:
4x=y is your answer because if x is 5, like in the table, then 4(5) would equal 20, which is the y-value. It also works for every number in the table.
Hope this helps.
Answer:
im pretty sure its 14
Step-by-step explanation:
The product of the sum of the their rates and the time it took them to finish the job should be equal to one whole job. This may be expressed by the equation,
(1/9 + r) x 6 = 1
Solving for the value of r gives an answer of r = 1/18. Thus, Hector does 1/18 of the job in 1 hour.
