Determine the equation of the line which is perpendicular to y = 2x + 9 and crosses through the point (1,2)
When multiplied together the gradients of perpendicular lines should give the answer - 1So: x1x2 = -1x1 = 2 x2 = -1/2It crosses through the point (1,2)y = ax+ ba = -1/2y = 22 = -1/2 + bb = 5/2so the equation of the line is y = -1/2x + 5/2
AD
Related Maths GCSE answers
All answers ▸The second term of an arithmetic sequence is 7. The sum of the first four terms of the arithmetic sequence is 12. Find the first term, a, and the common difference, d, of the sequence.
Find all three roots of the cubic: 2x^3 +5x^2 - 22x +15=0.
Solve the following simultaneous equations to give a value for both x and y: 3x+3y=9 and 2x+3y=5
In a right-angled triangle calculate the length of the hypotenuse when the side lengths at 5cm and 7cm. Leave your answer as a surd.