Mathematics
Grade-8
Easy

Question

The equation of a line with slope 2 and y-intercept – 1 is
 

  1. x + 2 = - y
  2. 2x + y = - 1
  3. 2 x – 1 = y
  4. x – 2 = y

hintHint:

A y-intercept is a point where the graph of a function or relation intersects with the y-axis of the coordinate system.

The correct answer is: 2 x – 1 = y


    G i v e n comma
s l o p e space equals space m space equals space 2
y minus i n t e r c e p t space equals negative 1

W e space k n o w space t h a t comma
y space equals space m x space plus space c
y space equals space open parentheses 2 close parentheses x space plus space open parentheses negative 1 close parentheses
y space equals space 2 x space minus space 1

H e n c e comma space t h e space l i n e space e q u a t i o n space i s space 2 x space minus space 1 space equals space y

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