Worked examples
Two examples
Example 1
Write 2x + y = 7 in slope-intercept form.
- Get y alone: subtract 2x from both sides.
Answer: y = −2x + 7
Example 2
Write 3x − 2y = 8 in slope-intercept form.
- Subtract 3x: −2y = −3x + 8.
- Divide every term by −2.
Answer: y = 32x − 4
Where this is taught: Lines on the Grid, “3. Standard 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.