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suiani8
15.10.2019 •
Mathematics
Which graph represents the solution set of y = x2 + 4x + 3 and y = 2x + 6?
graph a
graph b
graph c
graph d
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Ответ:
Hope that helps.
Ответ:
Answer with explanation:
We have to find the point of Intersection of , parabola and line.
The given equation of Parabola is
y= x²+4 x +3-----------(1)
The given equation of line is,
y =2 x +6----------(2)
Equating , (1) and (2), we get
x²+4 x +3=2 x +6
→x²+ 4 x - 2 x +3 -6=0
→x²+2 x -3=0
→x²+3 x - x -3=0
→x×(x+3)-1×(x+3)=0
→(x-1)(x+3)=0
→x-1=0 ∧ x+3=0
→x=1 ∧ x=-3
Substituting the value of , x in equation of line
x=1 gives, y =2 × 1 +6=8
x = -3, gives , y=2 × (-3) +6=-6+6=0
⇒Solution set,that is point of intersection of parabola and line is , (1,8) and (-3,0).
Ответ:
the third choice
Step-by-step explanation: