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3x - 2(4x - 7) = 4 3x - 8x + 14 = 4 -5x = -10 x = 2 ---> (4) Substitute (4) in (2), 4x - y = 7 4(2) - y = 7 8 - y = 7 y = 1 Therefore, x = 2, y = 1 Similarly, you can try the calculator to solve the equations for: 7x +...
simplifysolveforinversetangentline See All Line Equations Examples linem=4,(−1,−6) line(−2,4),(1,2) slope3x+3y−6=0 Description Find the equation of a line step-by-step Frequently Asked Questions (FAQ) How do you find the equation of a line?
For two data sets $X=(x_1,\ldots, x_n)$ and $Y=(y_1,\ldots,y_n)$, coefficients `a` and $b$ of the linear regression line, $\hat {y}=a+bx$, are determined by the following equations: $$\begin{align} a&=\frac{(y_1+ \ldots+y_n )(x_1^2+ \ldots+x_n^2 )...
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Solve system of equations step-by-step Frequently Asked Questions (FAQ) How do you solve a system of equations by substitution? To solve a system of equations by substitution, solve one of the equations for one of the variables, and substitute this expression into the other equation. Then,...
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Two-Step Equations Lesson Plan Using Reasoning to Understand Equations & Solutions How to Change the Subject of an Equation How to Solve Equations Using Rearrangement Solving Two-Step Equations | Overview, Examples & Word Problems Finding a Missing Quantity in an Algebraic Expression Solving Equations...
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