Well first off if you have a negative sign in front of the seven, DO NOT have a plus sign because it will be confusing. So y-7=13? , You add 7 to 13 and = 20, so y= 20
Plot the points on a graph. Connect the dots into a triangle. See that the height of the triangle is from y=5 down to y=1. So the height is 4 units.
Area of a triangle: A = (1/2)BH
You need to find the length of the base. Which is from point (-4,1) to (0,1). You can use the distance formula r just see from the graph that the base is 4 units.
A = (1/2)(4)(4)
A = 8
** Distance formula fyi
d² = (X-x)² + (Y-y)²
with points (X,Y) and (x,y)
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<h2><u><em>36x squared - 16y squared </em></u></h2>
Five x minus six is less than fourteen
The exact answer would be 3218.69 meters but since you're rounding upwards, your answer would be D. 3,220 meters.
Hope this helps,
♥<em>A.W.E.</em><u><em>S.W.A.N.</em></u>♥
