The y-intercept of the line whose equation is 2x + y = 4 is

a. -2
b. 2
c. 4

Question

The y-intercept of the line whose equation is 2x + y = 4 is

a. -2
b. 2
c. 4

seratul · Answer

Do you know how to make it into a y=mx+b form?

tkhunny · Answer

x = 0 ==> Substitute.  y-intercept appears.

directrix · Answer

@madeleine2 

Did you get an answer for this?

3mar · Answer

steps:
1. bring y in one side and collect others in the other side
2. make sure the coefficient of y is unity
3. the free term (always a number or rational, whatever) is the value at which the line intersect with y-axis. (if +ve, it intersects at $$y^+$$ , if -ve, it intersects at $$y^-$$)

|dw:1477198350745:dw|

directrix · Answer

The y-intercept is where the line crosses the y-axis. All points on the y-axis have an x-coordinate of 0.

Take the equation:

  2x + y = 4

Let x = 0.

2*0 + y = 4

Solve for y. That value is the y intercept.

You are here now. Tell us what you get for the value of y.

@madeleine2

directrix · Answer

Your Task:

Solve for y:    --> 2*0 + y = 4