How do I draw a graph, y = mx + c, if I am only given m and a point that the line passes through?

Let's say we have the equation y = 2x + c and we are told that the line passes through the point (3, 4).  Our first step is to use the numbers from the point (3, 4), by substituting them into our equation. Like so: 4 = 2(3) + c (We have changed the y to 4 and the x to 3). Next all we need to do is solve this equation to find c. 4 = 6 + c, c = -2. And we are done.

Answered by Alex D. Maths tutor

2737 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Solve for x: 4 x + 1 = 2 x + 12


How can I know whether to multiply or add probabilities?


In a bag of 25 coloured balls, 7 are orange, 6 are yellow and the rest are green. Laura picks out a ball and records its colour but doesn't return it to the bag, she then repeats this twice more. What is the probability of Laura getting 3 yellow balls?


The probability a student in a school wears glasses is 3/7. There are 164 students who DON'T wear glasses. Find the number that wear glasses.


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