body{margin:0;} noscript{z-index: 10000; position: fixed; display: block; height: 100%; width: 100%; background: #fff;} noscript .fa{font-size: 40px; display:block; color: #daa520;} noscript div{margin-top: 6%; padding-left: 20px; padding-right: 20px; text-align: center;} ! You must have JavaScript enabled to use this site.

Big Ideas Math: Modeling Real Life, Grade 8

BI

Big Ideas Math: Modeling Real Life, Grade 8 View details

5. Estimating Quantities

Continue to next subchapter

Exercise 6 Page 347

Everything necessary to use the point-slope form has been given in the problem.

y+4=- 2(x-1)

Practice makes perfect

An equation in point-slope form follows a specific format. y- y_1= m(x- x_1) In this format, m represents the slope and the point ( x_1, y_1) lies on the graph of the line. We are given the point ( 1, - 4) and the slope -2, so we have everything we need to create a point-slope form equation.

y-y_1=m(x-x_1)

SubstituteValues

Substitute values

y-( - 4)= - 2(x- 1)

a-(- b)=a+b

y+4=- 2(x-1)

Subchapter links

Try It p.344-345

Self-Assessment for Concepts & Skills p.345

Self-Assessment for Problem Solving p.346

Review & Refresh p.347

Concepts, Skills, & Problem Solving p.347-348