y = 2x + 5, Calculate x when y = 4
y = 2x + 5 y = 4, therefore 2x + 5 = 4 2x = 1 x = 1/2
JT
Related Maths GCSE answers
All answers ▸Solve the following simultaneous equations: x^2 + y^2 = 5, y - 3x = 1.
A scalene triangle ABC has side lengths AB=6cm, BC=4cm, and AC=x cm. The angle A, opposite BC, is 40 degrees and the angle B, opposite AC, is 50 degrees. State the sine rule and use it to find the value of x to 3 s.f.
What is £23 increased by 4%?
Show the curve y = 4x^2 + 5x + 3 and the line y = x + 2 have exactly one point of intersection