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A graph of a linear equation passes through 2 points, (2,9) and (-3,-1). Find the equation of the line in the form y=mx+c.

So first of all in finding the equation of this line, we shall find the gradient of the line which is represented by m. To find m, we use a formula and the values in the 2 coordinates. The first coordinate w...
RM
Answered by Ryan M. • Maths tutor
3997 Views

Write 16 × 8^(2x) as a power of 2 in terms of x

Aim: Our answer should be written in the form 2 a+bx where a and b are constants that we are trying to find. Firstly, we can write 16 in terms of a power of 2: 16 = 4 2 = 4 x 4 = (2 x 2) x (2 x 2) = 2 4 Simi...
SL
Answered by Sophie L. • Maths tutor
10520 Views

2X-6=4

1: Understand what is meant by "solve the following equation... " Ans: We are required to isolate x and find its value 2: Treat the equal sign as a magic bridge that reverses operation. 3: Start mo...
FS
Answered by Furkan S. • Maths tutor
4249 Views

If 3x =15 and x+y =7 what is (3y)^2?

First divide 15 by 3 to find xx= 15/3 = 5Now use x to find yx +y = 7 substitue x. 5+y=7y= 7-5= 2Now you know x=5 and y=2 use this to calculate the answer, remembering to do the sum within the brackets first....
LC
Answered by Lavana C. • Maths tutor
3197 Views

Differentiate the following equation, y = x^9 + 3x^2 + x^(-1)

dy/dx = 9x 8 + 6x - x -2
EL
Answered by Emma L. • Maths tutor
3331 Views