Answer:
Equation 1: x
=
5
y/
2
−
14 and y
=
2
x
/5
+
28/5
Equation 2: y
=
9
+
2
z/
7 and z
=
−
63
/2
+
7
y/
2
Equation 3: y
=
7
/3
−
2
z
/3 and z
=
7/
2
−
3
y
/2
Answer:
Both Shawn and Brielle are correct. The function that represents a vertical stretch by a factor of 9 is f(x)=9×2.The function that represents a horizontal shrink by a factor of 3 is: f(x)=(3x)2, which is equal to f(x)=9×2.
Additionally, if you wanted to verify that the given points are on the graph of both functions, you could substitute them into the functions to get true statements.
The answer in decimal form is <span>: -1.6</span>
Divide both sides by the numeric factor on the left side, then solve.
x = 0
Quadratic Formula
a=4
b=29
c=-60
x = -29 +- sq root(841 -4*4*-60) / 2*4
x = -29 +- sq root(841 +960) / 8
x = -29 +- sq root(1,801) / 8
x = [-29 +-
<span>
<span>
<span>
42.4381903478]
</span>
</span>
</span>
/ 8
x1 =
<span>
<span>
<span>
13.4381903478
</span>
</span>
</span>
/ 8
x1 =
<span>
<span>
<span>
1.6797737935
</span>
</span>
</span>
x2 = [-29 -
<span>
<span>
42.4381903478]
</span>
</span>
/ 8
x2 =
<span>
<span>
<span>
-71.4381903478
</span>
</span>
</span>
/ 8
x2 =
<span>
<span>
<span>
-8.9297737935
</span>
</span>
</span>