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Find the inverse function of f(x) = 5 / (x - 4)

To find the inverse of a function you follow 3 steps.Replace f (x) with x and any x variables with y Rearrange this equation into the form y = x variablesReplace the y with f ^-1 (x) and you have your answer...
KG
Answered by Kristen G. • Maths tutor
3561 Views

How can I write a good answer in English Literature?

Read the question over ta few times.Underline key words and phrases in the questions Make a brief plan of your answer, ensuring that you cover every point asked in the question (refer back to the parts you u...
MS
4349 Views

Solve the simultaneous equations: (3x+2y=3), (x-y=-4)

3x+2y=3 x-y=-4 First, we want to cancel out either x or y so that all we have left is the one we haven't cancelled and a number. To do this we can add or subtract the two equations, possibly multiplying one ...
RB
Answered by Rohan B. • Maths tutor
4434 Views

Which of the following lines is not perpendicular to y=2x+1? (A) y+1/2x=6 (B) 2y=4-x (C) 2x+y=4 (D) y=-1/2(7+x)

First of all, we need to figure out how to tell whether 2 lines are perpendicular. For any equation written in the form 'y=mx+c', the important bit of information we need to answer this question is the value...
OD
Answered by Oliver D. • Maths tutor
3930 Views

If two linear equations, y = x + 4 and y = 2x + c, intersect at x = 1, find c.

Draw the two equations, indicating the point of intersections (whiteboard).If the lines intersect at x=1, then at that point the y values of each equation are equivalent. Therefore, x+ 4 = 2x + c.Inputting x...
TD
Answered by Tutor27510 D. • Maths tutor
3099 Views