Algebra I - Review

_{What is the y-intercept of the line?}

• y = 1/2
• y = 1
• y = -1/2
• y = -1

What is the equation of the line?

• y = 4x - 2

• y = -2x + 4

• y = 2x + 4

• y = -4x - 2

What does 'b' represent in y=mx+b?

• y-intercept

• x-intercept

• nothing

• slope

What is the slope of the function 5x − 4y = 20?

• -5/4

• 5/4

• 4/5

• -4/5

Which is NOT a way to find slope?

• Rise/Run
• (y₂ - y₁)/(x₂ - x₁)
• Δy/Δx
• Where the line crosses the y-axis

Find the slope of the line containing these two points:

(3, -7) and (-4, 5)

• m = -12/7

• m = -7/12

• m = -2/7

• m = -7/2

Write the following equation in slope intercept form:

5x - 3y = -9

• y = (5/3)x - 3

• y = (5/3)x + 9

• y = (5/3)x + 3

• y = (3/5)x + 3

Write the equation for the line in slope-intercept form.

• y= -1x+3
• y= 4x+3
• y=1/4x+3
• y= -4x+3

When the equation y = 3x + 6 is changed to y = -3x + 6, what effect does this change have on the graph?

• The line moves to the left on the x-axis.

• The line moves downward on the y-axis.

• The line slants upward, from the left to right, instead of downward.

• The line slants downward, from left to right, instead of upward.

For the equation y - 3 = 2(x + 4), the line has a slope of 2 and contains what point?

• (-4, 3)

• (3, -4)

• (-3, -4)

• (-4, -3)