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Higher November 2017 Unit 2 Q16

WJECHigherCurrent spec2 marksGraphical Transformations

16. Each of the two graphs below is described by one of the equations on the right.
Put a tick in the box next to the equation which correctly describes each graph. [2]

Graph A

Graph A: an n-shaped parabola, symmetrical about the y axis, with maximum point at (0, 7), crossing the x axis either side of O
Equation describing graph A
\(y = 7x^2\)☐
\(y = -(x + 7)^2\)☐
\(y = (x - 7)^2\)☐
\(y = 7 - x^2\)☐
\(y = x^2 + 7\)☐

Graph B

Graph B: an increasing curve that approaches the x axis on the left, crosses the y axis at 1 and gets steeper to the right
Equation describing graph B
\(y = x^2 + 1\)☐
\(y = 2^x\)☐
\(y + 1 = x^2\)☐
\(y = \dfrac{1}{x}\)☐
\(y = x^0\)☐