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Re-Writing Equations Part of quiz @ end of class
4x + 2y = 6 If an equation is not in slope-intercept form, we must first solve the equation for y. 1)Add or subtract 2)Multiply or divide
Y = 3 – 2x How do we identify the slope? How do we identify the y-intercept?
4y + 12x = 16
25x – 5y = 30
Positive/Negative Slope Positive – Goes up from the left to the right. – Negative – Goes down from left to right –
Horizontal Think “hoy” – “h” – horizontal line – “o” – zero slope – “y” – equation is of the form y =
Undefined Think “vunx” – “v” – vertical line – “un” – undefined slope – “x” – equation is of the form x =
Section 3.4 The Slope Intercept Form of a Linear Equation
Rate of Change and Slope Objectives: Use the rate of change to solve problems. Find the slope of a line.
Chapter 3: Parallel and Perpendicular Lines
Equations of Lines Standard Form: Slope Intercept Form: where m is the slope and b is the y-intercept.
Writing Equations of Lines. Find the equation of a line that passes through (2, -1) and (-4, 5).
Lines, Lines, Lines!!! ~ Horizontal Lines Vertical Lines.
1.2 Linear Equations in Two Variables
Finding the Slope of a Line From Two Points
Writing equations in slope intercept form
Copy in Agenda and add to TOC: –#5 Finding Slope and Y-intercept Given Slope Intercept Form.
Graph a linear equation Graph: 2x – 3y = -12 Solve for y so the equation looks like y = mx + b - 3y = -2x – 12 Subtract 2x to both sides. y = x + 4 Divide.
Solving 2 step equations. Two step equations have addition or subtraction and multiply or divide 3x + 1 = 10 3x + 1 = 10 4y + 2 = 10 4y + 2 = 10 2b +
3.7 Equations of Lines in the Coordinate Plane
Exponents, Parentheses, and the Order of Operations.
Solve the equation -3v = -21 Multiply or Divide? 1.
5.1 Equations of Lines Equations of the form ax + by = c are called linear equations in two variables. x y 2 -2 This is the graph of the equation 2x +
Slopes and Parallel Lines Goals: To find slopes of lines To identify parallel lines To write equations of parallel lines.
The Slope of a Line. Finding Slope of a Line The method for finding the steepness of stairs suggests a way to find the steepness of a line. A line drawn.
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