In this problem, you are given a point and a slope.
You are asked to find an equation of the line through the given point
with the given slope.
The most natural way to write this equation is in point-slope form, which is the form asked for in part (a).
To find the answers sought for parts (b) and (c), just take the answer from part (a) and algebraically work it (by adding, multiplying, etc. quantities to both sides) to the forms sought in parts (b) and (c).
Note: When you give a new incorrect answer, a hint will become available (watch for the bottom button to say "Hint Available"). You must take a new guess at the answer (since the last time you did a "Check It") for a hint to become available. Clicking that button when it says "Hint Available" will give you a hint toward the solution. Following the hints will lead you to the solution.
Refer to "Theory of Lines" if you don't know the forms of equations of lines.
Refer to the "Instructions" if you don't know how to enter your answers.