Which of the following are characteristics of the graph of the quadratic parent function
2 answers:
Answer:
D. It is U-shaped
Step-by-step explanation:
The standard form of a quadratic function is . The graph of quadratic function opens in the direction of the positive y-axis or negative y-axis, it depends on the coefficient of
in the function. The shape of the graph of quadratic function is U shaped, because the greatest power of the x in the function is 2.
Hence The shape of quadratic function is U-shaped. It is the characteristics of the quadratic parent function.
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Answer:
i) 28 - 30i
ii) 36 + 28i
Step-by-step explanation:
i) x = 6 + i ⇒2x = 2(6 + i) = 12 + 2i
z = 4 - 8i ⇒ 4z = 4(4 - 8i) = 16 - 32i
2x + 4z = (12 + 2i) + (16 - 32i) = 28 - 30i
ii) w = -1 + 5i and z = 4 - 8i
w × z = (-1 + 5i)(4 - 8i) = -4 + 8i + 20i - 40⇒collect like terms
w × z = -4 + 28i - 40
∵
∴w × z = -4 + 28i - 40(-1) = -4 + 28i + 40 = 36 + 28i
