You would have to use this equation : y2-y1/x2-x1 = slope
So it would be -13 +3/6-2= -10/4
Simplify it and you get : -5/2
Slope is -5/2
Xy=49
x-y=13
x=13+y
y(13+y)=49
y²+13y-49=0
solve using the quadratic formula
Answer:
8/9 of a cup
Step-by-step explanation:
8 cups of icecream to be divided among 9 people, so they can't have full cups.
Each person will get 8/9 of a cup
Well, with the equation in that form, it may not be obvious how to graph it.
So let's change just the form a little bit... without changing the equation:
<u> y - 5 = 0</u>
Add 5 to each side: <em>y = 5 </em>
Look at that for awhile, and think about what it tells us.
It says that 'y' doesn't depend on 'x' at all. No matter how far left or right
you go on the graph, the y-value of <em>every point</em> is 5 .
The graph is a horizontal line across the graph. It cuts across the y-axis at
the point where y=5 , and it stays exactly at that same height everywhere.
The distance travelled by east bound car is 60 km.
<u>Explanation:</u>
Distance travelled by North bound plane = 63 km
Distance travelled by east bound plane = 87 km
Distance travelled by east bound plane = ?
The trajectory of the plane would form a triangle.
In a right angle triangle:
(hypotenuse)² = (base)² + (height)²
(87)² = (b)² + (63)²
7569 = b² + 3969
b² = 3600
b = 60 km
Therefore, distance travelled by east bound car is 60 km.
