Standard Form Review

What is standard form of a line?

• y = mx + b

• Ax + By = C

• y - y1 = m(x - x1)

• y = Ax + By

Which equation is written in STANDARD form?

• y = 1/2x + 2
• y - 3 = -5(x + 2)
• 7x + 2y = 9

• 3x + 2 = y

Give the x-intercept
3x + 8y = 24

• (8, 0)
• (0, 8)
• (3, 0)
• (0, 3)

Name the x- and y-intercepts for the equation: 4x - 10y = 20

• (4, 0) and (0, -10)

• (5, 0) and (0, 2)

• (5, 0) and (0, -2)

• (4, 0) and (0, -10)

Match the graph to the following linear equation.

 $7x\ -\ 4y\ =\ 28$  

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Pencils are $0.10 each and pens are $0.25 each. If Raj wants to buy a combination of pencils and pens, but he only has $50 to spend, which equation can help him to determine the x, amount of pencils he can buy and the y, amount of pens he can buy?

• 0.25x + 0.10y = 50

• 0.25x - 0.10y = 50

• 0.10x + 0.25y = 50

• 0.10x - 0.25y = 50

André gets paid $5 a week for his allowance and $10 every time he mows his neighbor’s yard. He puts all his money into his piggy bank. His piggy bank contains $70 and has only $5 bills and $10 bills. He also knows he has 11 total bills in the bank. Write an equation that represents the total value in his piggy bank.

Mathematical Equivalence

ON

The ___________________ of a graph is the x-coordinate of a point where the graph crosses the x-axis.

• x-intercept

• y-intercept

• z-intercept

• quadrant

The ___________________ of a graph is the y-coordinate of a point where the graph crosses the y-axis.

• x-intercept

• y-intercept

• z-intercept

• quadrant

What are the x- and y-intercepts of the line?

• x= -3 y = -4

• x = -3 and y = 4

• x = 0 y = -3

• None of the Above