Unit 2 Quiz 1 Linear Equations

If a line has a positive slope, what does it indicate about the line?

• The line is decreasing as the x-values increase, going down from left to right on a coordinate plane.

• The line is horizontal.

• The line is vertical.

• The line is increasing as the x-values increase, going up from left to right on a coordinate plane.

Find the slope of a line that passes through the points (0, 4) and (4, 11) using the slope formula.

Put the slope (fraction) in simplest form.

• 14/4

• 7/2

• 7/4

• 0

Write the equation of a line with a slope of 1/2 and a y-intercept of -4.

• y = 1/2x - 4

• y = -1/2x - 4

• y = -4x + 1/2

• y = 1/2x + 4

What is the slope of a horizontal line?

• 1

• infinity

• 0

• undefined

What is the slope of a vertical line?

• 0

• 1

• infinity

• undefined

• (222, 1)

• (110, 155)

• (400, 200)

• (172, 101)

Identify the Rate of Change (slope) of the graph representing the time in minutes it takes for a 450 gallon tank to empty in simplest form.

• -20

• 20

• -50

• 50

Identify the y-intercept of the graph representing the time in minutes it takes for a 450 gallon tank to empty in simplest form.

• 23

• 500

• 450

• 26

Write the linear equation in slope-intercept form of the graph representing the time in minutes it takes for a 450 gallon tank to empty.

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