A is the point with coordinates (5, 9). B is the point with coordinates (d, 15). The gradient of the line AB is 3. Work out the value of d.

y = mx + c m is the gradient and c is the y-interceptUse values for A, x=5 y=9 and m=3so 9 = (3 x 5) + c 9 = 15 + c c = -6Then use coordinates for B, x=d y=15 and m=3so 15 = (3 x d) -6 15 = 3d - 6 21 = 3d 7 = d

AB
Answered by Amani B. Maths tutor

4586 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Solve by factorisation: 2(x^2) - 5x - 12 = 0


Do I need to write down all of my working out?


How to find LCM and HCF of two numbers


Bob and Bill have 50 sweets to share in the ratio 4:6 respectively. how many do they each get?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences