How do you work out the nth term for a linear equation?
For a linear sequence use DNA! This is a formula that can be used to work out the nth term. It is officially written as Dn+alets take an example: 3, 7, 11, 15, 19, 23The "D" stands for the difference between the values in a sequence.The "n" stands for the nth term in the sequence.and the a stands for the 0th term in the sequenceIn the example above D is equal to 4 as 7-3=4The 0th term can be worked out by taking away the difference from the first term. So from the example above 3-4=-1. n=-1So substituting into the equation Dn+a the nth term is 4n-1
DM
Related Maths GCSE answers
All answers ▸In a recent election, 42% of the voters were male. There were 400 more female voters than male voters. Assuming all voters are either male or female, how many voters were there overall?
What is the gradient and the y-intercept of the graph y = 3x + 7 ?
15x^2 − 4x + x^2 + 9x − x − 6x^2 =
Solve the simultaneous equations for x and y: 2x - 3y + 4 = 0 , x - 2y + 1 = 0.