Find the Y coordinates for the points which lie on y = 2x + 1, whose X coordinates are 3, 4 and 6.

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Solution

y = 2x + 1

X coordinate = 3

y = (2x3) + 1 = 7

The point is (3, 7)

X coordinate = 4

y = (2x4) + 1 = 9

The point is (4, 9)

X coordinate = 6

y = (2x6) + 1 = 13

The point is (6, 13)

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Find the Y coordinates for the points which lie on y = 2x + 1, whose X coordinates are 3, 4 and 6.

y = 2x + 1 X coordinate = 3 y = (2x3) + 1 = 7 The point is (3, 7) X coordinate = 4 y = (2x4) + 1 = 9 The point is (4, 9) X coordinate = 6 y = (2x6) + 1 = 13 The point is (6, 13)

y = 2x + 1

X coordinate = 3

y = (2x3) + 1 = 7

The point is (3, 7)

X coordinate = 4

y = (2x4) + 1 = 9

The point is (4, 9)

X coordinate = 6

y = (2x6) + 1 = 13

The point is (6, 13)