8th Grade Math Presented by Mr. Laws y = mx + b Slope Intercept Form 8th Grade Math Presented by Mr. Laws

CCSS Standard 8.F.3 - Interpret the equation y = mx + b as defining a linear function, whose graph is a straight line; give examples of functions that are not linear. 8.F.4 – Find slope: Construct a function to model a linear relationship between two quantities.

Essential Question What is slope intercept form and how do I explain its meaning when graphing a straight line on a coordinate plane?

What is Slope Intercept Form? A slope intercept form is a form that helps draw a linear equation (straight line) on a coordinate plane. It contains the slope (m) and the y-intercept (b), which is needed when graphing a straight line on a coordinate plane. y – intercept is the coordinate where the line crosses the y-axis. y is the output, dependent variable, y-coordinate, or answer, x is the input, independent variable, x -coordinate, or x-value,

How do I write in Slope Intercept Form? Ex 1: m = 2; y-int = 1 Ex 3: m = 1; y-int = - 5 y = 2x + 1 y = x – 5 Ex 2: m = - 1 4 ; y-int = -3 Ex 4: m = 0; y-int = 8 y = - 𝟏 𝟒 x – 3 y = 8

How do I identify Slope Intercept Form on a Coordinate Plane?

How do I identify Slope Intercept Form on a Coordinate Plane? 𝑟𝑖𝑠𝑒=−1 (𝑑𝑜𝑤𝑛 1) 𝑟𝑢𝑛=1 (𝑟𝑖𝑔ℎ𝑡 1)

How do I identify Slope Intercept Form on a Coordinate Plane?

How do I identify Slope Intercept Form on a Coordinate Plane? Undefined slopes can not be written in Slope Intercept Form x = 2 It is written with “ x = “ a number depending on where the vertical line crosses the x-axis (x stands for x-intercept.

Summary Can you answer the essential question? Do you have any questions on what you have learned? Will you be able to write a summary based on the lesson?