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3 years ago

How do i find the slope and y intercept ?

Mathematics

2 answers:

Svetach [21]3 years ago

8 0

Here are the instructions. Then we'll do your specific problem.

Step 1: Solve the equation for y, and write it in the form y = mx + b.

Step 2: The slope is m, and the y-intercept is b.

Now let's start.

-2x - 5y = -20

To solve for y, we first add 2x to both sides.

-5y = 2x - 20

Now we divide both sides by -5.

$y = -\dfrac{2}{5}x + 4$

Now we compare what we got with the form, y = mx + b.

We see that m = -2/5, and b = 4. m is the slope, and b is the y-intercept.

slope: -2/5

y-intercept: 4

Vika [28.1K]3 years ago

4 0

y=mx+B is the formula for finding the slop intercept

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3 years ago

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icang [17]

The equation is $y = \frac{3}{2} x - \frac{11}{2}$

Explanation:

We have to first find the mid-point of the segment, the formula for which is

$(\frac{x_1+x_2}{2} , \frac{y_1+y_2}{2} )$

So, the midpoint will be $(\frac{-1+7}{2} , \frac{1-5}{2} )\\\\$

= $(3,-2)$

It is the point at which the segment will be bisected.

Since we are finding a perpendicular bisector, we must determine what slope is perpendicular to that of the existing segment. To determine the segment's slope, we use the slope formula $\frac{y_2-y_1}{x_2-x_1}$

The slope is $\frac{-5-1}{7+1}$ = $-\frac{2}{3}$

Perpendicular lines have opposite and reciprocal slopes. The opposite reciprocal of $-\frac{2}{3}$ is $\frac{3}{2}$

To write an equation, substitute the values in y = mx + c

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y = -1

x = 3

m = 3/2

Solving for c:

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3 years ago

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