Mathematics
30.07.2020 21:31
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Please answer if you know how to do it please, thank you

Please answer if you know how to do it please, thank you
Please answer if you know how to do it please, thank you
Please answer if you know how to do it please, thank you
Please answer if you know how to do it please, thank you
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markleal4022
markleal4022
4,4(7 marks)

9514 1404 393

  9.  vertex: (1, -2)

  10.  dashed line, shaded inside, opens down, (neither point is a solution)

Step-by-step explanation:

The graph is attached. Either the graph or the equation will tell you the vertex is (1, -2). Since the leading coefficient is negative, the parabola opens downward. Since the comparison is "y < ( )", shading is below the boundary line, so shading is inside the parabola.

The point (0, 0) is outside the parabola, so is not a solution. The point (2, -3) is on the (dashed) boundary line, so is not a solution. (The boundary line is dashed because points on it are not part of the solution set.)

__

The inequality is written in vertex form:

  y < a(x -h)^2 +k . . . . . . . . has vertex (h, k)

The value of h in your inequality is 1, and the value of k is -2, so the vertex is (1, -2) as read from the inequality itself. (No graphing needed.)


Please answer if you know how to do it please, thank you
Starzdaze5572
Starzdaze5572
5,0(83 marks)
C=8
y=18
8^2 - 18/2
exponents 
8*8   -18/2
64 -18/2
division
64 - 9
subtraction
55
Answer = 55

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