Writing Equations in Slope Intercept Form

What is the general form of the slope-intercept equation?

• y = mx + b

• y = ax^2 + bx + c

• y = mx - b

• y = m + bx

If the slope is -3 and the y-intercept is 1/2, what is the equation of the line?

• y = -3x + 1/2

• y = 3x + 1/2

• y = 3x - 1/2

• y = -3x - 1/2

What happens to the equation if the slope is 0?

• The equation becomes y = 0

• The equation becomes x = the y-intercept

• The equation becomes y = the y-intercept

• The equation becomes x = 0

How do you identify the y-intercept from a graph?

• Look for the highest point on the graph

• Find where the line crosses the y-axis

• Find where the line crosses the x-axis

• Calculate the slope first

If a line crosses the y-axis at 3 and has a slope of 3/2, what is the equation?

• y = 3/2x + 3

• y = 2/3x + 3

• y = 2x + 3/2

• y = 3x + 2

What is the slope formula when given two points?

• (y1 - y2) / (x1 - x2)

• (x2 - x1) / (y2 - y1)

• (y2 - y1) / (x2 - x1)

• (x1 - x2) / (y1 - y2)

What is the equation of a line if the slope is -2 and the y-intercept is -1?

• y = -2x - 1

• y = 2x + 1

• y = 2x - 1

• y = -2x + 1

What is the equation of a vertical line passing through x = 3?

• x = -3

• x = 3

• y = 3

• y = -3

If the input is 0 and the output is 10, what is the y-intercept?

• 10

• 0

• 6

• 34

Given points (0, 10) and (6, 34), what is the slope of the line?

• 34

• 24

• 6

• 4