Find the set of values of k for which the y = kx – 4 intersects the curve of y = x2 – 2x at two distinct points.
1 answer:
Answer:
For ax^2+bx+c=0,
x^2+x(-2-k)+4=0,
So, b=-2-k,
a=1, c=4, so
(-2-k)^2-(4*1*4)>0,
4+4k+k^2-16>0,
k*2+4k-12>0,
(k+6)*(k-2)>0,
the points of interest are
k=-6, k=2, so
look at k<-6, -6<k<2, and
k>2.
Just plug in values for each
interval and you will see
that k<-6 and k>2.
You might be interested in
Answer:
f(-1) = 0
f(2) = 16
Step-by-step explanation:
f(-1) = 4(-1) + 4 = 0
f(2) = 4(2) + 8 = 16
Answer:
1.5 hamburgers per minute
Step-by-step explanation:
In 10 minutes, Justin can eat 15 burgers.
In 1 minute, Justin can eat 15/10 burgers.
15/10 = 1.5
Answer:
:::::::::::::::::::
D
Let C(x) be the function which calculates the total cost of making x skirts.
There is going to be a fixed constant, 250, to which we will add 15$ per x skirts.
So C(x)=250+15x
Answer: 250+15x
Answer:
18 yards
Step-by-step explanation:
Area of park = 324 Square yards
