exam Maths Puzzle Numerical Ability

find the area of a circle with radius 27cm. use 3.14

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exam Other Question

Given y = 2x^2 - 4X, thanks.

A) find the y-intercept
b) Find the X-intercepts (if any).
c) find the vertex.
d) Sketch the parabola How do you find the slope of the line containing the points (-1, -1/5) and (2/3, 3/4)? I am confused about this because I do not understand how to find the slope when the points contain fractions and/or decimals.