2.5
9 * 2.5 * 6 = 135
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The expression "x subtract 9" can be written as x - 9. This means you are taking the value of x and subtracting 9 from it. For example, if x = 15, then x - 9 would be 15 - 9 = 6. Therefore, the result of x subtract 9 depends on the value of x.
135
w x w + 6 = 135 w2 + 6w - 135 =0 Ie (w - 9)(w + 15) = 0 width = 9m (length = 15m)
8x = 6y (8/6)x = y (4/3)x = y Let x = 3, 6, and 9, then y = 4, 8, and 12. So that for any value of x, you will find a correspoinding value for y.
Points: (3, x) and (-6, 5) Slope: 5-x/-6-3 = 1/3 => 5-x/-9 = 1/3 Multiply both sides by -9: 5-x = -9/3 => -x+5 = -3 Subtract 5 from both sides: -x = -3-5 => -x = -8 Divide both sides by -1: x = 8 which is the value of x