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Answer:
<em>The coefficient of the squared expression in the parabolas equation will be 5.</em>
Step-by-step explanation:
<u>The vertex form of parabola</u> is:
, where
is the vertex point and
is the coefficient of
term.
The vertex is given as
. That means,
and 
So, the vertex form will be: 
Given that, when the x-value is 4, the y-value is 3. So, plugging these values into the above equation, we will get.....

Thus, the coefficient of the squared expression in the parabolas equation will be 5.
Answer:
x=1 and y= -4
Step-by-step explanation:
step one: plug -4x into y in thi]e first equation.
2x+5(-4)= -18
step two: solve for x
2x-20= -18
(add 20 to both sides to eliminate -20 on the right)
2x=2
(divide both sides by 2 to get x by its self)
x=1
step 3: now that we found the value for x plug it in to either equation and solve for y
y= -4x
y= -4(1)
y= -4
The answer would be (d.) , it can also be put as 2^4*5