if the slope is going down then its negative but if the line is going up its positive
Answer:
The quadrilateral shown on the graph is most likely to be a square.
Choice A
Step-by-step explanation:
All the sides appear to be equal which is a characteristic of squares.
Secondly, the sides appear to be intersecting at right angles
Finally, the sides appear to be parallel to each other.
The table is:
Number of washes denoted by x: 0, 8, 12
Amount left on card denoted by y: 30, 18, 12
a.
Write an equation that shows the amount of
dollars left on the card
Solution:
18 – 30 divided by 8 – 0 = -12/8
On simplest form is -3/2
The equation is y = -3/2x + 30
b.
Explain the meaning of the negative slope above.
As the number of car washes increase,
the dollars left on the card decreases.
c.
What is the maximum value of x?
0 = -3/2x + 30
2/3 x 3/2 x = 30/1 x 2/3
Cancel 2/3 x 3/2 and reduce 30 by 3 we get
10, 10 x 2
x = 20
<span>the rectangle is ABCD
One of the sides of the rectangle falls on line AB
that line is AD
please see the attachement
</span>