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PEMDAS = Please Excuse My Dear Aunt Sally
The correct answer is D) y + 1 = 4/3(x - 9)
In order to find this, simply take the point and the slope and plug into the base form of point-slope form.
y - y1 = m(x - x1)
Use the slope for m and the point for (x1, y1)
y + 1 = 4/3(x - 9)
30-10=20
20-10=10
or
10+20=30
Answer:
C. two real solutions
Step-by-step explanation:
Your quadratic matches the form ...
ax^2 +bx +c = 0
for the values a=2, b=7, c=-15.
The discriminant is ...
d = b^2 -4ac
For your values of a, b, c, the discriminant value is ...
d = 7^2 -4(2)(-15) = 169
The discriminant is positive, indicating there are two real solutions.
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When the discriminant is negative, there are no real solutions, only complex solutions.
When the discriminant is zero, there is one real solution.
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This equation factors as (2x-3)(x+5) = 0 and has solutions x=3/2, x=-5.