Answer:
?
Step-by-step explanation:
The answer should be the directrix because k represents the y-value of the vertex, and for this questions the parabola is probably facing upward, so the directrix is under the vertex.
Answer:
57 sq.cm.
Step-by-step explanation:
Answer:

or in slope y-intercept form :

Step-by-step explanation:
The easiest way of find the answer for this is to use what is called the "point-slope" form of a line, because you are in fact given the value of the slope (m) and also a point
it goes through:

In our case the equation becomes:

This can also be written in the slope-intercept form by solving for "y" and operating to remove the parenthesis:
