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3 years ago

Which is the axis of symmetry of a parabola with equation y=-8x

Mathematics

1 answer:

shepuryov [24]3 years ago

4 0

if Y=0 then all you have to do is find X so the axis of symmetry is X=0, I hope this helps

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Write an equation in slope-intercept form that goes through (12, 4) and (20,8).

spayn [35]

Answer:

Equation in slope-intercept form that goes through (12, 4) and (20,8) is: $y = \frac{1}{2}x-2$

Step-by-step explanation:

Given two points are:

$(x_1,y_1) = (12,4)\\(x_2,y_2) = (20,8)$

Slope intercept form of line is given as:

$y = mx+b$

Here m is the slope of the line and b is the y-intercept.

Slope of a line is calculated by the formula:

$m = \frac{y_2-y_1}{x_2-x_1}$

Putting the values

$m = \frac{8-4}{20-12}\\m = \frac{4}{8}\\m=\frac{1}{2}$

Putting the value of slope in slope-intercept form we get

$y = \frac{1}{2}x+b$

To find the value of b, any one point will be put in the equation

Putting the first point (12,4) in the equation

$4 = \frac{1}{2}(12) + b\\4 = 6+b\\b = 4-6\\b = -2$

Putting the value of b

$y = \frac{1}{2}x-2$

Hence,

Equation in slope-intercept form that goes through (12, 4) and (20,8) is: $y = \frac{1}{2}x-2$

4 0

3 years ago

Can someone check if my answer is correct? Thank you!

a_sh-v [17]

Answer:

Step-by-step explanation:

you are correct.

3 0

3 years ago

I will give branliest to the first person to answer!

lara31 [8.8K]

Answer:

1: 10x-5

2: 6.5w-3y

3: 15+3n

4: not sure

8 0

2 years ago

PLZ HELP I REALLY NEED IT

Ber [7]

Answer:

18 Inches

Step-by-step explanation:

1 foot + 12 in + 6 in = 18 in

6 0

3 years ago

The cow had 2 grass and the dog ate 3 times as much as the cow. how much did the cow eat

seropon [69]

Answer:

Step-by-step explanation:

2 x 3 = 6

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3 years ago