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Find the inverse of the function f(x) =2x-7.

Step 1) Replace f(x) with y: y= 2x - 7 Step 2) Switch around the x and y values: x = 2y - 7 Step 3) Solve to find y by itself: x = 2y - 7 x +7 =2y (x+7)/2 = y Step 4) Replace y with the f(x) notation for the...
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Answered by Nikita D. • Maths tutor
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Some phenotypes, such as colour-blindness, are caused by sex-linked genes. Explain why colour-blindness is more common in men than in women

Sex-linked genes are located on the sex-chromosomes, X and Y. Females have two X-chromosomes, XX, and males have one X and one Y-chromosome, XY. The X-chromosome is much larger than the Y-chromosome and so c...
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Answered by Zoe N. • Biology tutor
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Factorise 2x^2+x-3

(2x+3)(x-1)
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Answered by Nisnavai M. • Maths tutor
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“Overall GDP is the best way to measure social and economic well-being.” To what extent do you agree? (20)

Gross domestic product is the total value of all finished goods and services produced by a country in a single year and is expressed in amount per head. As an aggregate measure of the total economic producti...
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Answered by Phoebe C. • Geography tutor
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Write down the equations of the three asymptotes and the coordinates of the points where the curve y = (3x+2)(x-3)/(x-2)(x+1) crosses the axes.

Step 1: find the asymptotes There are two kinds of asymptotes we look for: vertical and horizontal .The vertical ones happen when y goes to negative or positive infinity, which is when the denominator of the...
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