Graphs 7
1 mark · EasyWrite down the solution to the equation as it would be found by looking for where the line meets on a graph.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
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x = 4
Also accept: 4
Common mistakes: x = 10; x = -4; x = 3
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Marking points
B1 · 1 mark · Correctly writes that the solution is (or equivalent).
Worked solution
To solve graphically, you would draw and . The solution is the x-value where the two lines meet.
Set , so .