Answer:
Hello. The answer is A.
Step-by-step explanation:
The number before x shows the slope.
The other number shows the y intercept.
<h3>It is important that the number before y should be one and the equation should be like this:</h3>

Here h is intercept and m is slope.
I hope you understand.
Step-by-step explanation:
area of trapezoid=(a+b)×h divided by 2
=(9+19)×4 divided by2
=28×4 divided by2
=112 divided by 2
=56m square
Yes I think that is correct