Slope-intercept form

Read the slope and y-intercept straight from y = mx + b and write equations in that form.

Standards:8.F.B.4A-CED.A.2

Try it: three questions

Real questions from the practice bank. Tap an answer to check it.

Question 1 of 3

A fitness club charges a one-time membership fee plus $12 per month. After 5 months, a member has paid $95 total. What is the one-time membership fee?

Question 2 of 3

A mobile phone plan costs $8 per gigabyte of data used, plus a fixed monthly fee. If a customer's bill for 6 GB was $62, what is the fixed monthly fee?

Question 3 of 3

A plant grows at a constant rate. After 3 weeks, it is 15 cm tall. After 8 weeks, it is 35 cm tall. What was the plant's height when it was first planted (at week 0)?

How this fits in

Slope-intercept form is one skill in the Linear Functions unit. Students read the unit lesson, then earn a bronze, silver, or gold medal on their last 10 answers. Medals never go down. A mastered unit comes back for review after 1, 3, 7, 16, and 35 days so it stays learned.

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