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TEA [102]
3 years ago
15

Perpendicular lines intersect to form right angles. A.if the lines intersect to form right angles then the lines intersect to fo

rm right angles. B.if the lines are perpendicular then the lines are perpendicular. C. If the lines intersect to form right angles then the lines are perpendicular. D.if the lines are perpendicular then the lines intersect to form right angles.
Mathematics
2 answers:
Brilliant_brown [7]3 years ago
7 0

Answer:

so the answer is always ?

Step-by-step explanation:

if 2 lines intersect to farm a right angle , they are perpendicular ....... I hope that help

Mrrafil [7]3 years ago
5 0
If 2 lines intersect to farm a right angle , they are perpendicular ....... I hope that help
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What is the equation of the line shown in the graph? (-3,1) (2,-4)
ki77a [65]

Answer:

x + y = -2

Step-by-step explanation:

The two primary equations to remember when dealing with graphing 2-variable equations are: ax + by = c (a & b are the x & y coefficients, respectively), and the other is y = mx + c (m = slope, x & y represent themselves). There is another equation to find the slope. If not already known, it's: ∆y/∆x {∆(aka Delta) = difference}. So, since that's all been established, we can proceed to calculate your question:

1) Find your slope: 1 - (-4) = 5 for your y-variable. And -3 - 2 = -5 for your x-variable. So your slope = 5/-5 = -1

2) Use the y = mx + c equation together with either set of (x,y) coordinates to get the equation 1 = (-1)(-3) + c. Which gives you c = -2

3) So, going back to the main equation to remember, the ax + by = c, use a one of your given sets of x,y coordinates and input your known values for x, y, & c to get: a(-3) + b(1) = (-2) and do the same with other set (these are just double-checks, coefficients are all equal to 1 anyways). So, you should arrive to the equation: x + y = -2

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Which shows the correct substitution of the values a, b, and c from the equation 1 = -2x + 3x2 + 1 into the quadratic
lidiya [134]

Answer: A

Step-by-step explanation:

The first thing we need to do is to make sure our equation is in standard form. The given equation is not in standard form.

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Now that the equation is in standard form, we can find our A, B, C to see which quadratic equation is correct.

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We can automatically eliminate D because the first value is -3 when it is supposed to be -(-2). Also, the denominator is supposed to be 2a. We know that A=3. The denominator should be 2(3), not 2(-2).

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Therefore, A is the correct answer.

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