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Mathematics
Mathematics
Problem
For each quadratic function, find the values of
k
k
k
for which the function: i cuts the
x
x
x
-axis twice ii touches the
x
x
x
-axis iii misses the
x
x
x
-axis. a. a
y
=
2
x
2
+
k
x
−
k
y = 2x^2 + kx - k
y
=
2
x
2
+
k
x
−
k
b. b
y
=
k
x
2
−
2
x
+
k
y = kx^2 - 2x + k
y
=
k
x
2
−
2
x
+
k
c. c
y
=
x
2
+
(
k
+
2
)
x
+
4
y = x^2 + (k + 2)x + 4
y
=
x
2
+
(
k
+
2
)
x
+
4
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