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ladessa [460]
3 years ago
11

Which function's graph has x-intercepts at x=−1 and x=3, and a vertex at point (1,−4)?

Mathematics
1 answer:
Luda [366]3 years ago
5 0

Answer:

Top right option: g(x) = (x+1)(x-3)

Step-by-step explanation:

x=-1 is the solution to x+1=0

x=3 is the solution to x-3=0

Therefore, your expression so far is (x+1)(x-3) or x²-2x-3.

Since the vertex must be (1,-4) we must check if x=1 satisfies the equation x=-b/2a:

x=-b/2a

1=-(-2)/2(1)

1=2/2

1=1

Both sides are equal to each other, so the final function is g(x) = (x+1)(x-3)

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6 0
3 years ago
A is plotted on a coordinate grid at start bracket 3 and 1 over 2, negative 1 end bracket.. Choose the correct grid that best sh
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Answer:

A coordinate grid that shows a point located halfway between 3 and 4 units to the right and 1 unit down from the origin

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In a coordinate grid, the y axis is plotted on the vertical axis and the x axis is plotted on the horizontal axis. A is plotted on a coordinate grid at (3\frac{1}{2},-1) i.e (\frac{7}{2},-1). Above the origin is the positive y axis, below the origin is the negative y axis, right of the origin is the positive x axis and left of the origin is the negative x axis.

To plot A on the coordinate axis we need to locate 3\frac{1}{2} on the x axis and -1 on the y axis.  3\frac{1}{2} is halfway between 3 and 4, since the x coordinate is positive it is located to the right between 3 and 4 and since the y coordinate is negative it is located 1 unit down from the origin.

3 0
3 years ago
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Which property is used to simplify the expression 5(3x +18) to 15x+90
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Answer:

Distributive

Step-by-step explanation:

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3 years ago
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Answer:

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2 years ago
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