Worked examples
Two examples
Example 1
Write the equation of the line with slope 3 and y-intercept −2.
- Put the slope in place of m and the y-intercept in place of b in y = mx + b.
Answer: y = 3x − 2
Example 2
Write the equation of the line with slope 12 and y-intercept 4.
- m = 12, b = 4.
Answer: y = 12x + 4
Where this is taught: Lines on the Grid, “1. Slope-intercept form”
The drill
Ten problems
How many:
Type the right-hand side, like 2x - 5 (fractions like 3/4x are fine). Then press Check my answers at the bottom.Write each answer on the line. The answer key, with the reasoning, is on the last page.