Linear Equations in Point-Slope Form
Key Questions
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Answer:
1) point-slope form
2) slope intercept formExplanation:
1)
y−b=m(x−a)
m = slope
(a, b) A point that the line passes through2)
y=mx+b
m = slope
b = y-intercept -
Answer:
Explanation below:
Explanation:
Let's use this example from http://www.purplemath.com/modules/strtlneq2.htm to help you understand how to graph point-slope form equations:
m = 4 ,x_1 = –1 , andy_1 = –6 are given.Formula:
y – y_1 = m(x – x_1) Plug-in your variables:
y – (–6) = (4)(x – (–1)) Simplify. Two negatives make a positive:
y + 6 = 4(x + 1) Distribute 4 to x and 1. Simplify.
y + 6 = 4x + 4 Subtract 6 from both sides.
y = 4x – 2 graph{y=4x-2 [-12.66, 12.65, -7.7, 4.96]}
Source and for more info:
http://www.purplemath.com/modules/strtlneq2.htm -
To find the equation of a line having a point
P(x_p,y_p) and with the slopem , this formula can be used:y-y_p=m(x-x_p) .E.G.:
Find the line that passes from P(2,-3) with the slope of 4:
y+3=4(x-2)rArry=4x-11 .graph{4x-11 [-10, 10, -5, 5]}.
Questions
Forms of Linear Equations
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Write an Equation Given the Slope and a Point
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Write an Equation Given Two Points
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Write a Function in Slope-Intercept Form
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Linear Equations in Point-Slope Form
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Forms of Linear Equations
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Applications Using Linear Models
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Equations of Parallel Lines
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Equations of Perpendicular Lines
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Families of Lines
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Fitting Lines to Data
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Linear Interpolation and Extrapolation
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Problem Solving with Linear Models
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Dimensional Analysis