Off a grid, how do we know which measurements can help us find the area of a parallelogram?

1) Multiply the base of the parallelogram by the height to find the area.

2)Measure or record the length of the long, flat side, or base.

3)Draw a line straight up from the base to it's parallel side. 

4)Measure the distance between your base and the top of the parallelogram for height.

5)Multiply the base by the height to find the area.

6)Always add "units squared" at the end of your problem for the correct answer. 

Step-by-step explanation:

A parallelogram is a quadrilateral, or four-sided shape, with two sets of parallel sides. Squares, rectangles, and rhombuses are special types of parallelograms, though most people think of a "slanted" rectangle, with two diagonal sides and two flat sides, when they think of the parallelogram.[1] No matter what the angle of the corners or the slant of the shape, it is easy to calculate the area of a parallelogram.

correct answer:

b.(19,-2)

step-by-step explanation:

let

we know that

the y-intercept is the y-coordinate of the point when the value of x is equal to zero

so

the y-coordinate of the point a is the y-intercept

the answer part a) is

the value of y-intercept is

part b) find the slope m

we know that

the value of the slope is equal to

substitute the values

therefore

the answer part b) is

the value of the slope is equal to

the general answer is

the slope is

the value of y-intercept is