Friendly Math 101: Writing Linear Functions in Slope-Intercept Form

What is the general formula for a linear function in slope-intercept form?

• y = a(x - h)^2 + k

• y = ax^2 + bx + c

• y = m(x - x1) + y1

• y = mx + b

In the first example, what is the initial form used before converting to slope-intercept form?

• Standard form

• Point-slope form

• Quadratic form

• Vertex form

What is the slope used in the first example?

• 6

• 3

• 9

• -2

In the second example, what operation is performed when subtracting a negative y1 value?

• It doubles

• It becomes zero

• It becomes positive

• It remains the same

What is the slope used in the second example?

• 7

• 4

• 12

• -1

In the third example, what is the formula used to calculate the slope from two points?

• y2 - y1 / x2 - x1

• y = mx + b

• ax^2 + bx + c

• y - y1 = m(x - x1)

What is the calculated slope in the third example?

• 5

• -1

• 3

• 7

Which point is used in the third example to convert to slope-intercept form?

• Second point

• Neither point

• Both points

• First point

What is the final y-intercept in the third example after conversion?

• -33

• 15

• -3

• 0

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