U4 A1 Test Review: Application of linear functions

A straight line passes through the points (0, 1) and (4, 4). What is the equation of the line?

• y = -1/4x + 1

• y = -5/4x - 1/4

• y = x - 1/4

• y = 3/4x + 1

What is the equation of the line in point slope form given a slope of -12 and a point of (-4, -5)?

• y - 5 = -12(x - 4)

• y + 4 = -12(x + 5)

• y + 5 = -12(x + 4)

• y - 12 = -4(x + 5)

The amount of gas used varies directly with miles driven. If 195 miles are driven it takes 15 gallons of gas, How many miles could be driven on 9 gallons?

Groups:

(a) y = - 3x + 5

,

(b) y = 1/3x - 3

• A line perpendicular to y = - 3x - 17 passing through the point (0,5)

• A line parallel to y = 1/3x + 6 passing through the point (2,3)

• A line parallel to y = - 3x -12 passing through the point (4,6)

• A line perpendicular to y = 1/3x +2 passing through the point (13,4)

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Which function is graphed?

• -3x + 2y = -8

• -3x + 2y = 8

• 3x - 2y = -8

• 3x + 2y = 8

What is the equation for the line in standard form?

• x + 2y = -4

• -x + 2y = -4

• x - 2y = 4

• x - 2y = -4

Which equation is graphed?

• 4x - 3y = 12

• 4x - 3y = -12

• 4x + 3y = 12

• 4x + 3y = -12

Which correlation coefficient (r) and interpretation best represents the data?

• 0.591 no correlation

• 0.891 no correlation

• 0.125 positive correlation

• 0.891 positive correlation

The data has a correlation coefficient of -0.234. What does this signify about the relationship between the data?

• There's a strong positive linear correlation between the x and y values.

• There's a weak positive linear correlation between the x and y values.

• There's a strong negative linear correlation between the x and y values.

• There's a weak negative linear correlation between the x and y values.