In the xy-plane, a line has slope 4 and x-intercept 3. What is the y-intercept of the line?	Choices
A) -12
B) -3
C) 0
D) 3
E) 9
Let the line be represented by a general equation y=mx+b, where m = slope (4) and b=y intercept. We are also given the value of x-intercept 3.   Theory : y intercept represents the point on the line where the x=0, and x intercept represents the point on the line where the y=0.   Putting these values in the equation : 0 = 4*3 + b =&gt; b = -12. Hence -12.
<result>A</result>
In the xy-plane, a line has slope 4 and x-intercept 3. What is the y-intercept of the line?