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4 votes
Work out the equation of the line which has a gradient of -2 and

passes through the point (1, 7)

User Dgellow
by
3.3k points

1 Answer

7 votes

Answer:

y = -2x + 9

Explanation:

1) Use the equation y = mx + c (m being gradient and c being y-intercept)

2) Substitute all the values to get 7 = -2(1) + c

3) Solve to get c:

  • 7 = -2 + c
  • 9 = c

4) Final answer: y = -2x + 9

User Jawad Fadel
by
3.9k points