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3 years ago

What is the slope- intercept equation of the line below?

Mathematics

1 answer:

Vedmedyk [2.9K]3 years ago

6 0

Answer:

y= 5/4x - 2

Step-by-step explanation:

Hey!

Slope-Intercept Form is y = mx + b, where m is the slope and b is the y-intercept.

First we can locate the y-intercept, or where the line passes through the y-axis.

The y-intercept is -2.

Substitute in the Slope-Intercept Form Equation:

y = mx -2

Pick another point and substitute its x and y values in this equation.

I chose (5,2) and substituted as 2 = m(5) -2

Isolate m:

Add 2 to both sides [Addition Property of Equality]

2 + 2 = 5m - 2 + 2

4 = 5m

Divide by 5 on both sides. [Division Property of Equality]

5m/5 = 4/5

m=4/5

Substitute in Slope-Intercept Form Equation.

The Equation in Slope Intercept Form is y = 4/5x - 2

==================================================================

Hope I helped, Feel Free to ask any questions to clarify :)

Have a fantastic day!

-Aadi x

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Help I don't understand how to do this

klasskru [66]

Answer:

Step-by-step explanation:

Given

Points (-1,7) and (1,3)

Formula

m = (y2 = y1) / (x2 - x1)

y2 = 7

y1 = 3

x2 = - 1

x1 = 1

Solution

m = (7 - 3) / (-1 - 1)

m = 4 / - 2

m = - 2

Now use either one of the points to get b in y = mx + b

x = 1

y = 3

m = - 2

y = mx + b

3 = -2 (1) + b

3 = -2 + b

b = 3 + 2

b = 5

Equation: y = - 2x + 5

Second question.

y = -2 + 1

Think money. You have a dollar in your pocket, but you owe your mom 2 dollars. Where are you.

y = -2 + 1

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2 years ago

-4+6y=16 Change to slope (intercept)

hichkok12 [17]

*here is step by step*
(Remember to add the 'x' to the slope)

-4x+6y=16

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y= 4/6x + 2.66

The complete answer is:
y= 2/3x + 2.66

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3 years ago

Solve the system of equations below algebraically 2x+3y=6 and -5x+2y=4

Charra [1.4K]

Steps
I’m using elimination so I’m trying to get rid of y
To do that I multiply the first equation by 2 and the second by -3. Then solve
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Read 2 more answers

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leva [86]

Answer:

Step-by-step explanation:

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We have 68 rule as 2/3 of total would lie within 1 std deviation, and 95 rule as nearly 95% lie within 2 std deviations from the mean.

We have std deviation = 10

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= Mean ±2 std deviations

= $70$ ±20

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