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iris [78.8K]
3 years ago
6

Write a linear equation that intersects ytte points. Then willes second linear equation that intersecta y at just one point, and

ther equation that does not intersecty Expten how you found the linear equations 40
Mathematics
1 answer:
attashe74 [19]3 years ago
8 0

Answer:

(a)\ y = 2x +8

(b)\ y = 0

(c)\ y = -5

Step-by-step explanation:

Given

y = x^2

First, graph y = x^2 (See attachment)

We are not limited to any particular linear equation; as long as we meet the required condition

Solving (a): Equation of a line that intersects y = x^2 at two points

Select any two points on opposite sides of the curve

The selected points are:

(x_1,y_1) = (-2,4)

(x_2,y_2) = (4,16)

Calculate slope (m)

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

m = \frac{16 - 4}{4 - -2}

m = \frac{12}{6}

m = 2

The equation is then calculated using:

y = m(x - x_1) + y_1

This gives:

y = 2(x - -2) + 4

y = 2(x +2) + 4

Open bracket

y = 2x +4 + 4

y = 2x +8

Solving (b): Equation of a line that intersects y = x^2 at one point

A good illustration of this is x-axis

Because it intersects with the line at just one point, which is origin (0,0).

The equation of line at this point is:

y = 0

Solving (c): Equation of a line that does not intersect y = x^2

Here, we make use of any horizontal line below the x-axis

Select any two horizontal points below the x-axis

(x_1,y_1) = (-5,-5)

(x_2,y_2) = (5,-5)

Calculate slope

m = \frac{-5--5}{5--5}

m = \frac{0}{10}

m = 0

The equation is then calculated using:

y = m(x - x_1) + y_1

y = 0(x - -5) + (-5)

y = 0-5

y = -5

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Answer:

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Step-by-step explanation:

8 0
3 years ago
What's the answer to: 2/3x -4=-2
olga2289 [7]
<span>2/3x -4=-2
-------------------
Add 4 to each side
</span><span>2/3x-4+4</span>=-<span>2+<span>4
2/3x = 2
-----------------------------
Multiply each side by 3/2
(3/2) * (2/3x) = (3/2) * (2)
x = 3</span></span>
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