What is they y intercept and why?

Answer:
The equation of any straight line, called a linear equation, can be written as: y = mx + b, where m is the slope of the line and b is the y-intercept.
Step-by-step explanation:
The y-intercept of this line is the value of y at the point where the line crosses the y axis.
Answer:
A. (0, -3)
B. (0, 2)
Step-by-step explanation:
A. y>4x-3, This equation is similar to Intercept form only instead of the equal sign you have an inequality. There for we know that our Slope is up 4 over 1 and that our y-intercept is (0, -3).
B. This sequence is similar, our slope it going to be down 1 right one and our y-intercept is going to be (0, 2)