Yvonne is solving the quadratic equation 6x2 + 24x + 7 = 0 by completing the square. Her first four steps are shown in the table
. In which step did Yvonne first make an error? Step 1 Step 2 Step 3 Step 4
1 answer:
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Answer:
The graph in the attached figure
see the explanation
Step-by-step explanation:
Let
x -----> the number of bottles
y ----> the total cost of the water
we know that
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form or
This problem represent a direct (proportional) variation
so
For x=1, y=$1.50
----->
The linear equation is equal to
<u><em>Find the ordered pairs</em></u>
First
(1,1.50)
Second
For x=2
Find the value of y
Substitute in the equation
y=1.50(2)=3
The point is (2,3.00)
Third
For x=3
Find the value of y
Substitute in the equation
y=1.50(3)=4.50
The point is (3,4.50)
Fourth
For x=4
Find the value of y
Substitute in the equation
y=1.50(4)=6.00
The point is (4,6.00)
The four ordered pairs are
(1,1.50), (2,3.00),(3,4.50) and (4,6.00)
using a graphing tool
plot the points
