Answer:
[tex]1. \: y = - 2x + 3x + \times x \: 2 - 4 \times 2 + 1[/tex]
Since two opposites add up to zero, remove them from the expression.
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[tex]y = 3x - 4 \times 2 + 1[/tex]
To find x-intercept/zero, substitute y = 0
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[tex]0 = 3x - 4 \times 2 + 1[/tex]
Multiply the numbers
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[tex]0 = 3x - 8 + 1[/tex]
[tex]0 = 3x - 7[/tex]
Move the variable to the left hand side and change its sign
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[tex] - 3x = - 7[/tex]
Divide both sides of the equation by -3
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[tex]x = \frac{7}{3} [/tex]
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