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nika2105 [10]
3 years ago
9

What is the axis of symmetry for the function? y = x2 + 3x - 4

Mathematics
1 answer:
larisa86 [58]3 years ago
7 0
Axis of symmetry is a line passing through the vertex which divides the curge into two parts such tha each part looks the same.
For y= x^{2} +3x-4, the 'x' part is squared and the coefficient of x^{2} is positive. Hence, the curve will be a parabola facing up which means that the axis of symmetry will be a vertical line. i.e. x = m.
Investigating, f(-1) == (-1)^{2} +3(-1)-4=1-3-4=-6
f(-1.5) = = (-1.5)^{2} +3(-1.5)-4=2.25-4.5-4=-6.25
f(-2) = = (-2)^{2} +3(-2)-4=4-6-4=-6
From these, the curve has a vertex at point (-1.5, -6)
Therefore the axis of symmetry is line x = -1.5 (i.e. the third option)
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When solving negative one over five (x − 25) = 7, what is the correct sequence of operations?
miv72 [106K]
-\frac{1}{5}(x-25) = 7       multiply 5 to both sides first
-(x-25) = 35                                     then expand the brackets
-x+25=35                                        make x the subject now;
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x= -10
5 0
3 years ago
I don't really understand it's due soon can someone please help me​
katrin [286]

Answer:

60

Step-by-step explanation:

Given: 1/2a + 2/3b =50

(Since b is equal to 30 we will automatically replace b with 30)

Step 1: Simplify both sides of the equation.

1/2a+20=50

Step 2: Subtract 20 from both sides.

1/2a=50-20

1/2a=30

Step 3: Multiply both sides by 2.

2(1/2a) 2(30)

a=60

Hope this helps and if it does, don't be afraid to give my answer a "Thanks" and maybe a Brainliest if it's correct?  

5 0
3 years ago
Read 2 more answers
Jason's football team lost 6 yards from their starting position and then lost another 5 yards. What number represents a loss of
Alona [7]
What do mean where are ur options
5 0
3 years ago
Which set contains only whole numbers divisible to 6?
melisa1 [442]
Only <span>set Y = {6, 24, 36, 78, 84}, contains only whole numbers divisible by 6.

There were no options but this was the answer to this question on a quiz.

hope this helps!</span>
7 0
3 years ago
there are 3 liters of orange juice at a school party. 10 students want to drinkable of the orange juice, and they all want to ge
Softa [21]

Answer:

Each student gets 0.3 liters or 300 milliliters of orange juice.

Step-by-step explanation:

3 liters = 3000 milliliters

3L/10 or 3000ml/10 = 0.3 L or 300 ml

7 0
3 years ago
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