Aparabola is defined as the set of points in the plane that are equidistant from a fixed point (called the focus of the parabola) and a fixed line (called the directrix of the parabola).consider the parabola with focus point (1,1) and directrix the horizontal line y=−3.plot the focus and draw the directrix graph.

Step-by-step explanation:

A parabola is defined as the set of points in the plane that are equidistant from a fixed point  and a fixed line.

Let point on parabola be (x,y)

Distance from focus(1,1) and point (x,y):

Distance from point (x,y) and line y=-3  ( x would be vary) (x,-3)

Both distance must be equal for parabola

Please find attachment for graph. Focus and directrix shown in graph.

answer: city needs 2.4 inches of rainfall more to match the record of 40 inches.

step-by-step explanation:

since we have given that

total annual rainfall a city record = 40 inches

this year, total rainfall recorded = 37.6 inches

number of inches of rainfall   is needed to match the record of 40 inches is given by

hence, city needs 2.4 inches of rainfall more to match the record of 40 inches.

add an image, and i will answer

step-by-step explanation: