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Dmitry [639]
3 years ago
13

Evaluate f(x) = -4x - 5 for x = -1. A. -9 B. -1 C. 1 D. 4

Mathematics
2 answers:
Nadusha1986 [10]3 years ago
7 0
F(x) = -4x - 5

Subtitute the value of x to the equation:

f(-1) = -4 · (-1) - 5 = 4 - 5 = -1
Sedbober [7]3 years ago
7 0
F (x ) = - 4 x - 5       for x = -1

f(-1) = - 4*(-1) - 5

f(-1) =  + 4 - 5

f(-1) = -1

hope this helps!
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elena55 [62]

Answer:

x=-2,-4 is your answer

x²+6x+8=0

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8 0
2 years ago
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50 POINTS: Please help thank you so much!! (Image attached) The polygons are similar. Find the values of the variables.
BlackZzzverrR [31]

Step-by-step explanation:

9 + y^2 = 49

y^2 = 40

y = √40 = 2√10

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22.5x = (3) 2√10

22.5x = 6√10

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7 0
3 years ago
Use the value of the discriminant to determine the type of roots for x²-3x+1=0
nignag [31]

Hi,

Δ = 9 - 4 * 1 * 1 = 5

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7 0
3 years ago
Please help me I don’t understand this
Lyrx [107]
When you're given a point and the slope of a line, it is often easiest to write its equation in point-slope form.

This is y-y_1=m(x-x_1), where (x_1,y_1) is the ordered pair for the point you are given and m is the slope.

Here, you would write y-8=-3(x-7). Then, you simplify to get to slope-intercept form, which is y = mx+b, where b is the y-intercept.

y-8=-3(x-7) \\ y=-3x+29

The correct answer is A.
6 0
3 years ago
Can i have an answer
nordsb [41]

Answer:

I think it would be b

Step-by-step explanation:

im sorry if im wrong im not good with this stuff :c

5 0
3 years ago
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