5) Phone Sold (x) 7 5 10 8. 9. Money Earned (y) 147 105 210 168 189 Every phone sold earns dollars. 6) Time in minute (x) 3 9. 2 8 Gallons of Water Used (y) 84 252 56 140 224 Every minute gallons of water are used.

Q: Solve for y. 7x−2y=8

A:

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Q: Sxi = -2x1 + xX2 lx2 = -3x1 – 2x2 %3D

A:

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Q: solve each equation

A: To solve, 3x+1=4

Q: 조지y 1 8PAP 군P 시

A: Let's find.

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A: Given that Colleen walked  1 kilometer and plan to walk 6 kilometer each trip so total trip = 7

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Q: x +6x =-9 %3D

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.