7 th grade Skills IrrationalRational Numbers Slope Intercept

+ 7 th grade Skills Irrational/Rational Numbers Slope Intercept Form (Equation of a Line) Direct/Inverse Variation Probability

+ Do Now Today n Identify whether the #s are rational or irrational. A. ¾ B. Pi C. 7 n What is the slope of the line given by the following equation? y=2. 5 x− 7 Which equation shows inverse variation and which one shows direct variation?

+ Rational & Irrational Numbers Rational Irrational n Any Integer (whole #s) n Any non terminating number n Can be represented as a ratio or two integers n Can be written as a decimal, but not a fraction

+ Slope Intercept Form y=5 x+3 math/cc-eighth-grade-math/cc-8 thlinear-equations-functions/8 th-slopeintercept-form/v/graphing-a-line-inslope-intercept-form

+ Slope Intercept Form n What is the slope of the line given by the following equation? n y=6. 2 x+13. 3 n y= − 20. 375+101. 25 x n y= 5 x+3 n y= − 2 x + 6 n https: //www. khanacademy. org/math/cc-eighth-grade-math/cc 8 th-linear-equations-functions/8 th-slope-interceptform/v/graphing-a-line-in-slope-intercept-form

+ Equation of a Line

+ Direct & Inverse Variation

+ Direct & Inverse Variation n n Direct Variation = Y= kx y varies directly with x https: //www. khanacademy. org/v n Indirect (Inverse) Variation = Division = ideo/direct-and-inverse= k(1/x) variation n Y https: //www. khanacademy. org/video/recogni zing-direct-and-inverse-variation

+ Inverse Proportional Relationship

+ Relationships

+ Inversely Proportional Relationship

+ Probability n https: //www. khanacademy. org/video/making-predictions-withprobability n Cam is going to roll a fair 6 -sided die 2400 times. What is the best prediction for the number of times that Cam will roll the number 4?

+ Probability n Jeremy is going to roll a fair 6 -sided die 180 times. What is the best prediction for the number of times that Jeremy will roll a number greater than 4?

+ Probability