Question

What is the y-intercept of the line whose equation is y = x - 3?

-3
1/2
3

Answer 1

Answer:

-3

Step-by-step explanation:

y=0-3

y=-3

Answer 2

By definition,  the correct answer is the first option: the y-intercept is -3.

A linear equation o line can be expressed in the form y = mx + b.

where

• x and y are coordinates of a point.
• m is the slope.
• b is the ordinate to the origin and represents the coordinate of the point where the line crosses the y axis.

The ordinate to the origin is the value where the line intersects the axis. Thus, the value of x must be 0 for this to occur.

In this case you know that the form of the linear equation is y=x-3.

Being x=0, then:

y=0-3

y= -3

Finally, the correct answer is the first option: the y-intercept is -3.

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