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MrMuchimi
3 years ago
12

the equation of line AB is y = 1/5x -1 write an equation of a line perpendicular to line AB in slope intercept form that contain

s point (1, -2)
Mathematics
2 answers:
g100num [7]3 years ago
8 0
Y= -5x+3 is the equation that is perpendicular to line AB with the point (1,-2) 
natka813 [3]3 years ago
8 0
The slope of a perpendicular line is the opposite reciprocal of the slope of the line that is given which means that the slope of the perpendicular line in this case is -5. To get the equation of the perpendicular line that goes through the point (1, -2 ) plug in the x and y vales along with the slope you calculated into the point slope formula and solve to get the slope intercept form. 

y-(-2) = -5(x-1)

y=-5x + 3
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<u>Part</u><u> </u><u>2</u> 1.20x+1.05y

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2 years ago
I need help solving this equation
solmaris [256]

Answer:

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Step-by-step explanation:

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3 years ago
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Which equation represents a parabola that opens upward, has a minimum at x = 3, and has a line of symmetry at x = 3?
densk [106]

Answer:

A.\ y = x^2 - 6x + 13 is the correct answer.

Step-by-step explanation:

We know that vertex equation of a parabola is given as:

y = a(x-h)^2+k

where (h,k) is the vertex of the parabola and

(x,y) are the coordinate of points on parabola.

As per the question statement:

The parabola opens upwards that means coefficient of x^{2} is positive.

Let a = +1

Minimum of parabola is at x = 3.

The vertex is at the minimum point of a parabola that opens upwards.

\therefore h = 3

Putting value of a and h in the equation:

y = 1(x-3)^2+k\\\Rightarrow y = (x-3)^2+k\\\Rightarrow y = x^2-6x+9+k

Formula used: (a-b)^2=a^{2} +b^{2} -2\times a \times b

Comparing the equation formulated above with the options given we can observe that the equation formulated above is most similar to option A.

Comparing y = x^2 - 6x + 13 and y = x^2-6x+9+k

13 = 9+k

k = 4

Please refer to the graph attached.

Hence, correct option is A.\ y = x^2 - 6x + 13

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Eduardwww [97]

Answer:

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Step-by-step explanation:

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X=2Y-7 (from 1st condition)

putting in it second

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20+28=8Y-Y

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Y=48/7

so X=2(48/7)-7

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