Understanding Slope-Intercept Form

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

• y = mx^2 + b

• y = a/x + b

• y = ax^2 + bx + c

• y = mx + b

In the first example, what is the calculated slope (m) for the line passing through the point (3, 8) with a y-intercept of -7?

• -7

• 8

• 3

• 5

What is the equation of the line derived in the first example?

• y = 3x + 8

• y = 3x - 7

• y = 5x + 7

• y = 5x - 7

In the second example, what is the slope (m) for the line passing through the point (10, 0) with a y-intercept of 4?

• 4/10

• -2/5

• 2/5

• -4/10

What is the equation of the line derived in the second example?

• y = 4/10x - 4

• y = 2/5x - 4

• y = -2/5x + 4

• y = -4/10x + 4

In the third example, what is the slope (m) for the line passing through the point (-4, -20) with a y-intercept of -6?

• 14/4

• -7/2

• 7/2

• -14/4

What is the equation of the line derived in the third example?

• y = 7/2x - 6

• y = 7/2x + 6

• y = -7/2x + 6

• y = -7/2x - 6

What is a common mistake to avoid when working with slope-intercept form?

• Ignoring the y-intercept

• Using the wrong formula

• Misplacing negative signs

• Forgetting to multiply x by m

What should you do if you have a negative slope and a negative y-intercept?

• Keep track of the negative signs

• Divide them by each other

• Subtract the y-intercept from the slope

• Add them together

What is the result of dividing a negative number by another negative number?

• Undefined

• Zero

• A negative number

• A positive number