Which is a valid prediction about the continuou function f(x)?
Х
-5
-3
-1
1
3
5
7
f(x)
8.
4.
0
-2
-2
0
4.
O f(x) 20 over the interval [5, ).
O f(x) < 0 over the interval [-1, 0).
Of(x) > 0 over the interval (-00, 1).
O f(x) < 0 over the interval (-09. –1).

the slope of the line is 60

one point on the line is (40,10)

step-by-step explanation:

in the equation outside the parenthesis the equation always tells you the slope. in this case it is 60.

in the parenthesis is also says 40 which is x because it is near the x and 10 is y because it is near y.

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4

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step-by-step explanation: