PLZ NEED AN ANSWER FAST WORTH 5 TO 10 POINTS
1 answer:
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Answer:
The graph has only one x-intercept
Step-by-step explanation:
we have
we know that
The discriminant of a quadratic equation of the form
is equal to
in this problem we have
so
substitute
The discriminant is zero
That means ----> The quadratic equation has one real solution
The graph has only one x-intercept
We can check each of these using the Pythagorean Theorem, 
Option A:
.25 + 1.44 = 1.691.69 = 1.69
This option works
Option B
1 + 4 = 9
5 ≠ 9
This option does not work, but let's check the others to make sure
Option C:
36 + 64 = 100
100 = 100
This option works
Option D:
9 + 16 = 25
25 = 25
This option works
So, after doing the calculations, we see that option B does not work
Option A:
.25 + 1.44 = 1.691.69 = 1.69
This option works
Option B
1 + 4 = 9
5 ≠ 9
This option does not work, but let's check the others to make sure
Option C:
36 + 64 = 100
100 = 100
This option works
Option D:
9 + 16 = 25
25 = 25
This option works
So, after doing the calculations, we see that option B does not work