Simultaneous equation: (x-3y)=9,(2x+3y)=0
Using one of the equations we express either x in the form of y, or y in the form of x. We then put this expression of x/y into the other equation. This allows us to calculate the numerical values of both x and y.1) x=9+3y, 2)(2(9+3y)+3y)=0, 3)y=-2, 4)x=9+3(-2), 5)x=3
KT
Related Maths GCSE answers
All answers ▸A particle is moving along a straight line. The fixed point O lies on this line. The displacement of the particle from O at time t seconds is s metres where s = 2t3 – 12t2 + 7t(a) Find an expression for the velocity, v m/s, of the particle at time t.
Solve the following quadratic equation: 2x^2 - 5x - 3 = 0
Solve 3x² + 6x – 2 = 0. Give your solutions correct to 2 decimal places [calculator paper]
What are the trigonometric functions?