Unit 3 Algebra Test Review

• Slope is 1/4
• Slope is -1/4
• Slope is 4
• Slope is -4

• y = -3x + 1
• y = -1/3x + 1
• y = 3x + 1
• y = -3x + 1

• y-intercept of 4
• y-intercept of -4
• y-intercept of 2.5
• y-intercept of -2.5

What are the slope and y-intercept of the line described by 5x + y = 25

• m = 25, b = -5
• m = 5, b = 25
• m = -5, b = 25
• m = 25, b = 5

Write an equation in slope-intercept form for the line that goes through (3, -5) and has a slope of 4. 

• y = 4x - 7
• y = -4x + 7
• y = 4x -17
• y = 1/4x + 5

What is the equation of the line that is perpendicular to y = 1/3x + 2 and passes through (-3, 1)?

• y = 1/3 x + 1
• y = -1/3x + 2
• y = 3x - 8
• y = -3x - 8

• Yes, a function
• No, not a function

The function f(x) has slope of 5 and y-intercept of -3. Which function has the same rate of change as f(x) = 5x - 3?

• y = -5x - 3
• y = 5x + 15
• y = -3x + 5
• y = 3x - 5

Find the equation of the line that passes through points (2, -1) and (1, -7).

• y = 13x - 6
• y = 6x - 13
• y = -6x + 13
• y = -13x + 6

Use the point-slope formula to find the equation of the line that passes through the points (1, 2) and (-3, 6). Hint: Find slope first.

• y = 3x + 1
• y = x + 3
• y = -x + 3
• y = 3x - 1