Write y = mx + b from a table, graph or story, and say what m and b mean
Grade 8 Math Worksheet
Circle the best answer, or write your answer on the line.
Read this first
Use the table
input: x output: y 4 17 2 11 6 23 Zee's math-club table shows a line, with no row for x = 0. What rule, written as y = mx + b, gives every row?
Bo's math-club table shows a line, with no row for x = 0. What rule, written as y = mx + b, gives every row?
Esme's math-club table shows a line, with no row for x = 0. What rule, written as y = mx + b, gives every row?
Jun draws a line on a math-club grid. Neither marked point is on the y-axis. What rule, written as y = mx + b, gives this line?
Luz draws a line on a math-club grid. Neither marked point is on the y-axis. What rule, written as y = mx + b, gives this line?
Milo's bucket has 4 L of water, and the hose adds 3 L each minute. Let x be minutes and y liters. What rule gives y, as y = mx + b?
Noah's candle is 20 cm tall and burns 2 cm each hour. Let x be hours and y the height in cm. What rule gives y, as y = mx + b?
Pia's plant grows steadily: 9 cm at week 2 and 15 cm at week 5. Let x be weeks and y cm. What rule gives y, as y = mx + b?
Ren's reading log follows y = 12x + 30, the pages read after x days. What does the 12 tell you?
- Ren reads for 12 days
- Ren reads 12 pages each day
- Ren had read 12 pages before day 1
Tala's snowman follows y = -4x + 50, its height in cm after x hours of sun. What does the 50 tell you?
- The snowman was 50 cm tall at hour 0
- The snowman melts after 50 hours of sun
- The snowman melts 50 cm each hour from the start