Download presentation

Presentation is loading. Please wait.

Published byTristan Core Modified over 2 years ago

1
**The equation of a line - Equation of a line - Slope - Y intercept**

y = mx + b - Equation of a line - Slope - Y intercept -when given slope and y intercept -when given slope and a point -when given two ordered pairs

2
**Equation of a line y m x b y = m*x + b**

Y coordinate of a point on the line X coordinate of a point on the line Slope of the line Y intercept, the point on the y axis that the line passes through m x b

3
**Slope Calculating Slope y = m*x + b Slope is represented by m**

Slope is Rise/Run When given two points, (x1,y1), (x2,y2) m = (y2-y1)/(x2-x1) Example

4
**Slope Calculating Slope y = m*x + b Slope is represented by m**

Slope is Rise/Run When given an ordered pair, (x,y), and y intercept, b, Substitute x Substitute y Substitute b Solve for m Example

5
**Calculating y intercept**

y = mx + b Y intercept is represented by b When given m and an ordered pair, (x,y), plug in y,x, and m and solve for b Example

6
**Finding y intercept Given : (1,2) m = 3 Equation of a line :**

y = mx + b y = 3x + b y = 3(1) + b 2 = 3(1) + b 2 = 3 + b 2 – 3 = 3 + b – 3 -1 = b The y intercept is -1

7
**Equation of a Line (when given a slope and y intercept )**

Given : m = 2 , b = 3 The equation of a line is y = mx + b -Substitute m -y = 2x + b -Substitute b -y = 2x + 3

8
**Equation of a Line (when given two ordered pairs)**

Calculate slope m = 1 Calculate y intercept b = 1 Substitute m and b into y = mx + b y = 1x + 1

9
**Finding Slope (given 2 points) Given : (x1, y1), (x2, y2)**

m = (y2 – y1)/(x2-x1) Substitute y2 Substitute y1 Subtract (y2-y1) Substitute x2 Substitute x1 Subtract (x2-x1) Divide (y2-y1)/(x2-x1)

10
Equation Finding (when given 2 points) Given (x1,y1), (x2,y2) Calculate slope Substitute an ordered pair (x,y) Substitute m Solve for b y = mx + b For the final answer leave the y and x but substitute the m and b

11
**(Calculating slope when given ordered pair and y intercept)**

Equations (Calculating slope when given ordered pair and y intercept) Given : (x1,y1) :(1,2), b = 1 Substitute y1 in for y (2 = mx + b) Substitute x1 in for x (2 = m(1) + b) Substitute b in for b (2 = m(1) + 1) Solve for m 2-1 = m +1 – 1 m = 1

Similar presentations

OK

WARM UP 1. Explain how to graph a linear equation written in slope-intercept form. 2. Explain how to graph a linear equation written in point-slope form.

WARM UP 1. Explain how to graph a linear equation written in slope-intercept form. 2. Explain how to graph a linear equation written in point-slope form.

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on statistics in maths what does median Converter pub to ppt online reader Ppt on new technology free download Ppt on network management and security Ppt on ecology and environment Ppt on game theory prisoner's dilemma Ppt on web browser in java Ribosome display ppt online Ppt on leadership skills download Ppt on science working models