We don't need to graph the line. All we have to do is use our slope formula.
Answer is provided in the image attached.
PLEASE HELP!!!!!!!!!
1 answer:
You might be interested in
Answer:
Step-by-step explanation:
<u>Quadratic Equation</u>
A quadratic equation also called a second-degree equation is a special polynomial whose highest degree is two.
The general form of the quadratic equation is
Where a is known as the leading coefficient. Another form to write the quadratic equation is
Where x1 and x2 are the roots or zeroes of the equation.
We have the roots of the given equation are -2 and 2, and the leading coefficient is 3.
Plugging in the given values we have
Operating
<h3>16 lollipops and 9 bags of chips are sold</h3>
<em><u>Solution:</u></em>
Let "x" be the number of lollipops sold
Let "y" be the number of bags of chips sold
Cost of 1 lollipop = $ 1.50
Cost of 1 bag of chip = $ 1.75
<em><u>Yesterday Lucy made $39.75 from selling a total of 25 lollipops and bags of chips</u></em>
Therefore,
x + y = 25
y = 25 - x -------- eqn 1
<em><u>Yesterday Lucy made $39.75</u></em>
Therefore,
number of lollipops sold x Cost of 1 lollipop + number of bags of chips sold x Cost of 1 bag of chip = 39.75
1.5x + 1.75y = 39.75 -------- eqn 2
<em><u>Substitute eqn 1 in eqn 2</u></em>
1.5x + 1.75(25 - x) = 39.75
1.5x + 43.75 - 1.75x = 39.75
0.25x = 4
<h3>x = 16</h3><em><u>Substitute x = 16 in eqn 1</u></em>
y = 25 - 16
<h3>y = 9</h3>Thus 16 lollipops and 9 bags of chips are sold