Mathematics
12.03.2020 06:36
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Match the transformation of the polynomial function f(x) = 2x3 − x2 − 5x + 3 with

Match the transformation of the polynomial function f(x) = 2x3 − x2 − 5x + 3 with the resulting function.

translation 2 units up
vertical stretch by 2
horizontal stretch by 2
reflection across x-axis
reflection across y-axis
translation 2 units down
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jacquelineS4232
jacquelineS4232
5,0(67 marks)

Parent Function: g(x)=x3

Horizontal Shift: Right 0.167 Units

Vertical Shift: Up 2.149Units

Reflection about the x-axis: None

Reflection about the y-axis: Reflected

Vertical Compression or Stretch: Stretched

Step-by-step explanation:

To find the transformation, compare the function to the parent function and check to see if there is a horizontal or vertical shift, reflection about the x-axis or y-axis, and if there is a vertical stretch.

johnsonwhitney2
johnsonwhitney2
4,6(29 marks)

m∠DRM = 45°

Step-by-step explanation:

∵ PSTR is a parallelogram

∴ TS // RP ⇒ opposite sides

∴ m∠T + m∠R = 180° ⇒ (1) (interior supplementary angles)

∵ m∠T : m∠R = 1 : 3

∴ m∠R = 3 m∠T ⇒ (2)

- Substitute (2) in (1)

∴ m∠T + 3 m∠T = 180

∴ 4 m∠T = 180

∴ m∠T = 180 ÷ 4 = 45°

∴ m∠R = 3 × 45 = 135°

∵ m∠R = m∠S ⇒ opposite angles in a parallelogram

∴ m∠S = 135°

∵ RD ⊥ PS

∴ m∠RDS = 90°

∵ RM ⊥ ST

∴ m∠RMS = 90°

- In quadrilateral RMSD

∵ m∠S = 135°

∵ m∠RDS = 90°

∵ m∠RMS = 90°

∵ The sum of measure of the angles of RMSD = 360°

∴ m∠DRM = 360 - ( 135 + 90 + 90) = 45°

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