Answer:
x=-8,y=-2
Step-by-step explanation:
x=2+5 y
put value of x in eq 2
9(2+5 y)+8=32 y
18+45 y+8=32 y
26=32 y-45 y
26=-13 y
y=26/-13
y=-2
put value of y in eq x=2+5 y
x=2+5(-2)
x=2-10=-8
We have the following function
We want to know what is the value of f(x) when x is 19
If you have additional questions feel free to ask.
Hope this helps.
Vertex: (-5,-2); parabola opens up;
General form of the equation for a vertical parabola opening up is:
y-k = a(x-h)^2; knowing that the vertex is at (-5,-2), we can write:
y+2 = a(x+5)^2. We need to find the value of the coefficient a.
From the graph we see that y is 10 when x is approx. -1 3/4 (or -7/4).
subst. these values into y+2 = a(x+5)^2, we get:
10 + 2 = a(-7/4 + 5)^2, or 12 = a(13/4)^2, or 1 = a(169/16).
Solving for a: a = 16/169 = 0.09, or approx 16/160, or 1/10. Unfortunately, this is not close to any of the four answer choices.
I thought it best to try again, and fortunately my second try was correct:
10+2 = a(13/4)^2, or (169/16)a. Thus, 12 = a(169/16)
12
Solving for a: a = ------------- = 1.14. The answer choice closest to this is 1.
169/16
Answer A is correct.
As a ratio it would be18:14
but as a fraction it would be 18/14
Answer:
theres two answers to this question and im not sure which one is correct
it can be -8 or 90
you should specify which one is t1 and which one is t2
Step-by-step explanation:
correct me if im wrong